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John D. Fieldhouse - One of the best experts on this subject based on the ideXlab platform.
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The Influence of Pad Abutment on Brake Noise Generation
SAE Technical Paper Series, 2011Co-Authors: John D. Fieldhouse, David Bryant, Chris J. TalbotAbstract:The paper overviews the modes of vibration of the principal component parts of a Brake and their contribution to system instability during Noise generation. It is shown that both in-plane and out-of-plane vibration are present and that both can be related to the vibration of the pad. It is further shown that the pad and its region often provide a solution or “fix” towards Noise prevention and it is this area that forms the focus of this investigation. The collective evidence, proposals and associated theory are applied to real Brake case studies when it is demonstrated that disc/pad interface “spragging” may be the source of Brake Noise. Measurements of the position of the dynamic centre of pressure (CoP) support the theoretical predictions that a leading CoP induces Brake Noise. Design proposals are suggested that may be applied early in the design phase as a means to reduce the propensity of a Brake to generate Noise.
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The Influence of Pad Abutment on the Generation of Brake Noise
International Journal of Vehicle Structures and Systems, 2011Co-Authors: John D. Fieldhouse, David Bryant, Chris J. TalbotAbstract:The paper overviews the modes of vibration of the principal component parts of a Brake and their contribution to system instability during Noise generation. It is shown that both in-plane and out-of-plane vibration is present and that both can be related to the vibration of the pad. It is further shown that the pad and its region often provide a solution or 'fix' towards Noise prevention and it is this area that forms the focus of this investigation. The collective evidence, proposals and associated theory are applied to real Brake case studies when it is demonstrated that disc/pad interface 'spragging' may be the source of Brake Noise. Measurements of the position of the dynamic centre of pressure (CoP) support the theoretical predictions that a leading CoP induces Brake Noise. Design proposals are suggested that may be applied early in the design phase as a means to reduce the propensity of a Brake to generate Noise. doi: 10.4273/ijvss.3.1.06
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The Measurement and Analysis of the Disc/Pad Interface Dynamic Centre of Pressure and Its Influence on Brake Noise
SAE International Journal of Passenger Cars - Mechanical Systems, 2008Co-Authors: John D. Fieldhouse, Naveed Ashraf, Chris J. TalbotAbstract:This paper discusses the measurement of the dynamic centre of pressure (CoP) of a Brake pad during a normal braking event using a modified 12-piston opposed calliper. The modifications allow the centre of pressure to be controlled both radially and along the length of the pad, inducing a leading or trailing centre of pressure as desired. The technique is unique in its design and implementation. Both the centre of pressures of the in-board and out-board pads are recorded simultaneously with varying pressures and speeds. The results, which include pressure and force maps, show the position of the centre of pressure to vary considerably during a braking event, both radially and axially along the pad. The CoP offset is related to the calliper mounting geometry which is subsequently compared to the effective “spragging angle” and the generation of Brake Noise. It is seen that by inducing a leading offset Noise may be generated and subsequently eliminated if a trailing centre is then induced. The results suggest that by careful selection of the backplate abutment friction level the CoP may be controlled to always fall within the “stable envelope” region and so resist Noise generation.
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the measurement and analysis of the disc pad interface dynamic centre of pressure and its influence on Brake Noise
SAE International Journal of Passenger Cars - Electronic and Electrical Systems, 2008Co-Authors: John D. Fieldhouse, Naveed Ashraf, Chris J. TalbotAbstract:This paper discusses the measurement of the dynamic centre of pressure (CoP) of a Brake pad during a normal braking event using a modified 12-piston opposed calliper. The modifications allow the centre of pressure to be controlled both radially and along the length of the pad, inducing a leading or trailing centre of pressure as desired. The technique is unique in its design and implementation. Both the centre of pressures of the in-board and out-board pads are recorded simultaneously with varying pressures and speeds. The results, which include pressure and force maps, show the position of the centre of pressure to vary considerably during a braking event, both radially and axially along the pad. The CoP offset is related to the calliper mounting geometry which is subsequently compared to the effective “spragging angle” and the generation of Brake Noise. It is seen that by inducing a leading offset Noise may be generated and subsequently eliminated if a trailing centre is then induced. The results suggest that by careful selection of the backplate abutment friction level the CoP may be controlled to always fall within the “stable envelope” region and so resist Noise generation.
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Mathematical modelling of Brake Noise vibrations using spectral methods
2007Co-Authors: Chris J. Talbot, John D. Fieldhouse, Andrew Crampton, William P. SteelAbstract:Using holographic techniques it has become possible not only to perform a modal investigation of disc Brake squeal but also to examine the actual evolution in time of the wave motion on the disc surface. This applies to both out-of-plane and in-plane displacements. In order to mathematically model this disc wave motion it was decided to employ a method that is used in the numerical solution of partial differential equations (pdes) , namely spectral collocation. This technique approximates the solutions of pdes by trigonometric or Chebyshev polynomials so that spatial differentiation can be performed by differentiation matrices. Time evolution is carried out by standard time-stepping techniques. In the absence of strong shocks and for regularly shaped regions the method is particularly efficient and has been successfully used in geophysics and meteorology. This work investigates its application in elastodynamics where it can be used to model moving contact problems. INTRODUCTION Brake Noise (squeal) is notoriously difficult to predict by mathematical modelling [1]. Finite element models can indicate possible frequencies at which Noise can occur, but have been unsatisfactory in providing a deeper understanding of the mechanism involved. Dynamic models using finite elements have proved to be very expensive in computer time. Experimental techniques, especially holographic interferometry, have made it possible to build up a considerable amount of knowledge about the types of vibration that occur in a noisy Brake. Using electronic triggering devices it has been possible to take a series of holograms at different times during the period of vibration when a Brake is continuously emitting Noise (see Figure 1). This provides a picture of the waveform on the surface of a vibrating Brake disc. It has also been possible using mirrors to take three holographic images at different angles, thus enabling both in-plane and out-of-plane motion of a Brake disc to be investigated. Significantly large in-plane components are often observed. From this information animations can be constructed showing the real vibration of a Brake system as it generates Noise [2,3]. Such detailed experimental information has motivated the search for modelling techniques that can provide dynamic models without being prohibitive on computing time. One possible approach is the use of Spectral methods [4,5,6]. With smooth data and for simple domains such methods are particularly efficient for the numerical solution of partial differential equations (PDEs) and can often satisfactorily include nonlinearities. The method has proved very successful in models that normally involve considerable computation time in areas such as meteorology and geophysics. If the independent variables are approximated by polynomials or truncated trigonometric series, numerical differentiation can be carried out by using standard differentiation matrices. The technique is usually highly accurate and is also relatively easy to implement in computer programs. A very good exposition of the method, including application to a range of ordinary and partial differential equations with efficient Matlab code, is available in [4]. Figure 1: Holograms of disc Brake generating Noise taken at different times during a cycle of vibration. Fringe lines can be regarded as contour lines of out-of-plane displacement field showing the existence of travelling waves. OUTLINE OF SPECTRAL METHOD To illustrate the type of spectral method that can be used to solve elasticity problems it is perhaps easiest to start with a simple ordinary differential equation (ODE): ) ( ) ( 2 2 x f x u dx d = , , u (1) a u = − ) 1 ( b = + ) 1 ( The basic idea is to replace with an n th degree polynomial that is determined by its values at n+1 collocation points . It is conventional to take and but clearly scaling is ) (x u n x ,..., 1 ) (x p 1 + = x x , 0 0 x 1 − = n x possible. Rather than take the points to be equally spaced between –1 and +1, the method supposes them to be so-called Chebyshev points, that is the points given by the formula n k xk π cos =
Chris J. Talbot - One of the best experts on this subject based on the ideXlab platform.
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The Influence of Pad Abutment on Brake Noise Generation
SAE Technical Paper Series, 2011Co-Authors: John D. Fieldhouse, David Bryant, Chris J. TalbotAbstract:The paper overviews the modes of vibration of the principal component parts of a Brake and their contribution to system instability during Noise generation. It is shown that both in-plane and out-of-plane vibration are present and that both can be related to the vibration of the pad. It is further shown that the pad and its region often provide a solution or “fix” towards Noise prevention and it is this area that forms the focus of this investigation. The collective evidence, proposals and associated theory are applied to real Brake case studies when it is demonstrated that disc/pad interface “spragging” may be the source of Brake Noise. Measurements of the position of the dynamic centre of pressure (CoP) support the theoretical predictions that a leading CoP induces Brake Noise. Design proposals are suggested that may be applied early in the design phase as a means to reduce the propensity of a Brake to generate Noise.
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The Influence of Pad Abutment on the Generation of Brake Noise
International Journal of Vehicle Structures and Systems, 2011Co-Authors: John D. Fieldhouse, David Bryant, Chris J. TalbotAbstract:The paper overviews the modes of vibration of the principal component parts of a Brake and their contribution to system instability during Noise generation. It is shown that both in-plane and out-of-plane vibration is present and that both can be related to the vibration of the pad. It is further shown that the pad and its region often provide a solution or 'fix' towards Noise prevention and it is this area that forms the focus of this investigation. The collective evidence, proposals and associated theory are applied to real Brake case studies when it is demonstrated that disc/pad interface 'spragging' may be the source of Brake Noise. Measurements of the position of the dynamic centre of pressure (CoP) support the theoretical predictions that a leading CoP induces Brake Noise. Design proposals are suggested that may be applied early in the design phase as a means to reduce the propensity of a Brake to generate Noise. doi: 10.4273/ijvss.3.1.06
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The Measurement and Analysis of the Disc/Pad Interface Dynamic Centre of Pressure and Its Influence on Brake Noise
SAE International Journal of Passenger Cars - Mechanical Systems, 2008Co-Authors: John D. Fieldhouse, Naveed Ashraf, Chris J. TalbotAbstract:This paper discusses the measurement of the dynamic centre of pressure (CoP) of a Brake pad during a normal braking event using a modified 12-piston opposed calliper. The modifications allow the centre of pressure to be controlled both radially and along the length of the pad, inducing a leading or trailing centre of pressure as desired. The technique is unique in its design and implementation. Both the centre of pressures of the in-board and out-board pads are recorded simultaneously with varying pressures and speeds. The results, which include pressure and force maps, show the position of the centre of pressure to vary considerably during a braking event, both radially and axially along the pad. The CoP offset is related to the calliper mounting geometry which is subsequently compared to the effective “spragging angle” and the generation of Brake Noise. It is seen that by inducing a leading offset Noise may be generated and subsequently eliminated if a trailing centre is then induced. The results suggest that by careful selection of the backplate abutment friction level the CoP may be controlled to always fall within the “stable envelope” region and so resist Noise generation.
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the measurement and analysis of the disc pad interface dynamic centre of pressure and its influence on Brake Noise
SAE International Journal of Passenger Cars - Electronic and Electrical Systems, 2008Co-Authors: John D. Fieldhouse, Naveed Ashraf, Chris J. TalbotAbstract:This paper discusses the measurement of the dynamic centre of pressure (CoP) of a Brake pad during a normal braking event using a modified 12-piston opposed calliper. The modifications allow the centre of pressure to be controlled both radially and along the length of the pad, inducing a leading or trailing centre of pressure as desired. The technique is unique in its design and implementation. Both the centre of pressures of the in-board and out-board pads are recorded simultaneously with varying pressures and speeds. The results, which include pressure and force maps, show the position of the centre of pressure to vary considerably during a braking event, both radially and axially along the pad. The CoP offset is related to the calliper mounting geometry which is subsequently compared to the effective “spragging angle” and the generation of Brake Noise. It is seen that by inducing a leading offset Noise may be generated and subsequently eliminated if a trailing centre is then induced. The results suggest that by careful selection of the backplate abutment friction level the CoP may be controlled to always fall within the “stable envelope” region and so resist Noise generation.
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Mathematical modelling of Brake Noise vibrations using spectral methods
2007Co-Authors: Chris J. Talbot, John D. Fieldhouse, Andrew Crampton, William P. SteelAbstract:Using holographic techniques it has become possible not only to perform a modal investigation of disc Brake squeal but also to examine the actual evolution in time of the wave motion on the disc surface. This applies to both out-of-plane and in-plane displacements. In order to mathematically model this disc wave motion it was decided to employ a method that is used in the numerical solution of partial differential equations (pdes) , namely spectral collocation. This technique approximates the solutions of pdes by trigonometric or Chebyshev polynomials so that spatial differentiation can be performed by differentiation matrices. Time evolution is carried out by standard time-stepping techniques. In the absence of strong shocks and for regularly shaped regions the method is particularly efficient and has been successfully used in geophysics and meteorology. This work investigates its application in elastodynamics where it can be used to model moving contact problems. INTRODUCTION Brake Noise (squeal) is notoriously difficult to predict by mathematical modelling [1]. Finite element models can indicate possible frequencies at which Noise can occur, but have been unsatisfactory in providing a deeper understanding of the mechanism involved. Dynamic models using finite elements have proved to be very expensive in computer time. Experimental techniques, especially holographic interferometry, have made it possible to build up a considerable amount of knowledge about the types of vibration that occur in a noisy Brake. Using electronic triggering devices it has been possible to take a series of holograms at different times during the period of vibration when a Brake is continuously emitting Noise (see Figure 1). This provides a picture of the waveform on the surface of a vibrating Brake disc. It has also been possible using mirrors to take three holographic images at different angles, thus enabling both in-plane and out-of-plane motion of a Brake disc to be investigated. Significantly large in-plane components are often observed. From this information animations can be constructed showing the real vibration of a Brake system as it generates Noise [2,3]. Such detailed experimental information has motivated the search for modelling techniques that can provide dynamic models without being prohibitive on computing time. One possible approach is the use of Spectral methods [4,5,6]. With smooth data and for simple domains such methods are particularly efficient for the numerical solution of partial differential equations (PDEs) and can often satisfactorily include nonlinearities. The method has proved very successful in models that normally involve considerable computation time in areas such as meteorology and geophysics. If the independent variables are approximated by polynomials or truncated trigonometric series, numerical differentiation can be carried out by using standard differentiation matrices. The technique is usually highly accurate and is also relatively easy to implement in computer programs. A very good exposition of the method, including application to a range of ordinary and partial differential equations with efficient Matlab code, is available in [4]. Figure 1: Holograms of disc Brake generating Noise taken at different times during a cycle of vibration. Fringe lines can be regarded as contour lines of out-of-plane displacement field showing the existence of travelling waves. OUTLINE OF SPECTRAL METHOD To illustrate the type of spectral method that can be used to solve elasticity problems it is perhaps easiest to start with a simple ordinary differential equation (ODE): ) ( ) ( 2 2 x f x u dx d = , , u (1) a u = − ) 1 ( b = + ) 1 ( The basic idea is to replace with an n th degree polynomial that is determined by its values at n+1 collocation points . It is conventional to take and but clearly scaling is ) (x u n x ,..., 1 ) (x p 1 + = x x , 0 0 x 1 − = n x possible. Rather than take the points to be equally spaced between –1 and +1, the method supposes them to be so-called Chebyshev points, that is the points given by the formula n k xk π cos =
Oluremi Olatunbosun - One of the best experts on this subject based on the ideXlab platform.
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Implicit-explicit co-simulation of Brake Noise
Finite Elements in Analysis and Design, 2015Co-Authors: Mohammad Esgandari, Oluremi OlatunbosunAbstract:The Finite Element Analysis (FEA) method has long been used as a means of reliable simulation of Brake Noise. In the simulation and analysis of Brake Noise, computational time is a significant factor. Complex Eigenvalue Analysis (CEA) is the most common Brake Noise analysis method since it can provide a quick prediction of the frequency of the instability 19]. However, most non-linear behaviours of the system are simplified in order to achieve a quick analysis result in the frequency domain. The explicit analysis can provide a more comprehensive understanding of the system by taking into account non-linear variables of the system in time domain. However, performing an explicit analysis is expensive in terms of computing time and costs.This study investigates effectiveness of a hybrid implicit/explicit FEA method which combines frequency domain and time domain solution schemes. The time/frequency domain co-simulation analysis simulates the Brake unit partly in implicit and partly in explicit, and combines the results. The aim of the study is to investigate the suitability of implicit-explicit co-simulation for Brake Noise, Vibration and Harshness (NVH) evaluations. The simulation results are correlated with the vehicle test results. The rotation of the disc is simulated in explicit domain while the rest of the loadings are based in the frequency domain using CEA implicit method. The performance of the co-simulation solution scheme is evaluated and compared to the implicit CEA analysis. Hypothesis regarding capturing vibrations of the system through the outer layer of the disc.Simulation of Brake Noise instabilities using implicit/explicit co-simulation.Fourier transformation of the analysis results.Compare the analysis results with the Complex Eigenvalue Analysis results.Perform dynamometer tests and correlate the analysis results with the experimental data.
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Computer aided engineering prediction of Brake Noise: modeling of Brake shims
Journal of Vibration and Control, 2014Co-Authors: Mohammad Esgandari, Oluremi OlatunbosunAbstract:Brake shims, applied to Brake pads, are used for suppressing high frequency Noise in disc Brake units. Also called Brake insulators, they do this mainly by adding more damping to the system in the Brake pad area. This reduces the likelihood of the energy transfer between the components which would cause modal coupling. Finite element analysis (FEA), as a simulation and analysis technique, is widely used in the industry to perform squeal analysis as a part of the virtual development of new Brake units. However, in most computer aided engineering (CAE) simulations of Brake Noise, shims are modeled as thin sheets of steel or are not modeled at all. This introduces some inaccuracy because the damping effect and flexibility of the rubber and adhesive material are ignored. Such inaccuracy in predicting system behavior, in the virtual design stage, means the analyst may not be able to locate the right frequencies of any occurring instability in order to decide on a Noise fix. Also, the over-prediction of instabi...
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effect of damping in complex eigenvalue analysis of Brake Noise to control over prediction of instabilities an experimental study
SAE 2013 Brake Colloquium & Exhibition - 31st Annual, 2013Co-Authors: Mohammad Esgandari, Richard Taulbut, Oluremi OlatunbosunAbstract:ABSTRACT Disc Brake Noise is recognized as a major problem of the automotive industry. Various experimental and numerical techniques have been developed to model the noisy Brake and investigate possible solutions. Developing a virtual model of the disc Brake which can accurately reproduce the behavior of the Brake unit under different conditions is a considerable step forward towards reaching this goal.Among various aspects of the analytical model of a disc Brake, application of the correct value of damping based on the material properties and functional frequency range of each component is a significant factor in ensuring correct prediction of the Brake system behavior.Complex Eigenvalue Analysis is well established as a tool for predicting Brake instabilities which can potentially lead to Brake Noise. However, it is known to over-predict instabilities i.e. predict instabilities which do not occur in the real Brake system. The over-prediction of unstable modes is thought to be as a result of insufficient damping in the model compared with the real Brake system. For this reason, the Finite Element Analysis model of the Brake unit needs to be tuned in terms of damping characteristics to ensure that the model replicates the system's real behavior.This study aims to tune the damping of different components of the Brake unit Finite Element Analysis model using data from an experimental study. The study then compares the instability predictions of the tuned model and the un-damped model, and correlates them with the behavior of the same Brake unit when tested on a dynamometer. This is intended to minimize over-predicted instabilities.
Mohammad Esgandari - One of the best experts on this subject based on the ideXlab platform.
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Simulation methods for vehicle disc Brake Noise, vibration & harshness
2015Co-Authors: Mohammad EsgandariAbstract:After decades of investigating Brake Noise using advanced tools and methods, Brake squeal remains a major problem of the automotive industry. The Finite Element Analysis (FEA) method has long been used as a means of reliable simulation of Brake Noise, mainly using the Complex Eigenvalue Analysis (CEA) to predict the occurrence of instabilities resulting in Brake Noise. However it has been shown that CEA often over-predicts instabilities. A major improvement for CEA proposed in this study is tuning the model with an accurate level of damping. Different sources of damping are investigated and the system components are tuned using Rayleigh damping method. Also, an effective representative model for the Brake insulator is proposed. The FEA model of the Brake system tuned with the damping characteristics highlights the actual unstable frequencies by eliminating the over-predictions. This study also investigates effectiveness of a hybrid Implicit-Explicit FEA method which combines frequency domain and time domain solution schemes. The time/frequency domain co-simulation analysis presents time-domain analysis results more efficiently. Frictional forces are known as a major contributing factor in Brake Noise generation. A new Brake pad design is proposed, addressing the frictional forces at the disc-pad contact interface. This concept is based on the hypothesis that variation of frictional coefficient over the radius of the Brake pad is effective in reducing the susceptibility of Brake squeal.
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Implicit-explicit co-simulation of Brake Noise
Finite Elements in Analysis and Design, 2015Co-Authors: Mohammad Esgandari, Oluremi OlatunbosunAbstract:The Finite Element Analysis (FEA) method has long been used as a means of reliable simulation of Brake Noise. In the simulation and analysis of Brake Noise, computational time is a significant factor. Complex Eigenvalue Analysis (CEA) is the most common Brake Noise analysis method since it can provide a quick prediction of the frequency of the instability 19]. However, most non-linear behaviours of the system are simplified in order to achieve a quick analysis result in the frequency domain. The explicit analysis can provide a more comprehensive understanding of the system by taking into account non-linear variables of the system in time domain. However, performing an explicit analysis is expensive in terms of computing time and costs.This study investigates effectiveness of a hybrid implicit/explicit FEA method which combines frequency domain and time domain solution schemes. The time/frequency domain co-simulation analysis simulates the Brake unit partly in implicit and partly in explicit, and combines the results. The aim of the study is to investigate the suitability of implicit-explicit co-simulation for Brake Noise, Vibration and Harshness (NVH) evaluations. The simulation results are correlated with the vehicle test results. The rotation of the disc is simulated in explicit domain while the rest of the loadings are based in the frequency domain using CEA implicit method. The performance of the co-simulation solution scheme is evaluated and compared to the implicit CEA analysis. Hypothesis regarding capturing vibrations of the system through the outer layer of the disc.Simulation of Brake Noise instabilities using implicit/explicit co-simulation.Fourier transformation of the analysis results.Compare the analysis results with the Complex Eigenvalue Analysis results.Perform dynamometer tests and correlate the analysis results with the experimental data.
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Computer aided engineering prediction of Brake Noise: modeling of Brake shims
Journal of Vibration and Control, 2014Co-Authors: Mohammad Esgandari, Oluremi OlatunbosunAbstract:Brake shims, applied to Brake pads, are used for suppressing high frequency Noise in disc Brake units. Also called Brake insulators, they do this mainly by adding more damping to the system in the Brake pad area. This reduces the likelihood of the energy transfer between the components which would cause modal coupling. Finite element analysis (FEA), as a simulation and analysis technique, is widely used in the industry to perform squeal analysis as a part of the virtual development of new Brake units. However, in most computer aided engineering (CAE) simulations of Brake Noise, shims are modeled as thin sheets of steel or are not modeled at all. This introduces some inaccuracy because the damping effect and flexibility of the rubber and adhesive material are ignored. Such inaccuracy in predicting system behavior, in the virtual design stage, means the analyst may not be able to locate the right frequencies of any occurring instability in order to decide on a Noise fix. Also, the over-prediction of instabi...
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effect of damping in complex eigenvalue analysis of Brake Noise to control over prediction of instabilities an experimental study
SAE 2013 Brake Colloquium & Exhibition - 31st Annual, 2013Co-Authors: Mohammad Esgandari, Richard Taulbut, Oluremi OlatunbosunAbstract:ABSTRACT Disc Brake Noise is recognized as a major problem of the automotive industry. Various experimental and numerical techniques have been developed to model the noisy Brake and investigate possible solutions. Developing a virtual model of the disc Brake which can accurately reproduce the behavior of the Brake unit under different conditions is a considerable step forward towards reaching this goal.Among various aspects of the analytical model of a disc Brake, application of the correct value of damping based on the material properties and functional frequency range of each component is a significant factor in ensuring correct prediction of the Brake system behavior.Complex Eigenvalue Analysis is well established as a tool for predicting Brake instabilities which can potentially lead to Brake Noise. However, it is known to over-predict instabilities i.e. predict instabilities which do not occur in the real Brake system. The over-prediction of unstable modes is thought to be as a result of insufficient damping in the model compared with the real Brake system. For this reason, the Finite Element Analysis model of the Brake unit needs to be tuned in terms of damping characteristics to ensure that the model replicates the system's real behavior.This study aims to tune the damping of different components of the Brake unit Finite Element Analysis model using data from an experimental study. The study then compares the instability predictions of the tuned model and the un-damped model, and correlates them with the behavior of the same Brake unit when tested on a dynamometer. This is intended to minimize over-predicted instabilities.
Sebastian Oberst - One of the best experts on this subject based on the ideXlab platform.
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deep learning for Brake squeal Brake Noise detection characterization and prediction
Mechanical Systems and Signal Processing, 2021Co-Authors: Merten Stender, Merten Tiedemann, David Spieler, Daniel Schoepflin, Norbert Hoffmann, Sebastian OberstAbstract:Abstract Despite significant advances in modeling of friction-induced vibrations and Brake squeal, the majority of industrial research and design is still conducted experimentally, since many aspects of squeal and its mechanisms involved remain unknown. In practice, measurement data is available in large amounts. We report here for the first time on novel strategies for handling data-intensive vibration testings to gain better insights into friction Brake system vibrations and Noise generation mechanisms. Machine learning-based methods to detect and characterize vibrations, to understand sensitivities and to predict Brake squeal are applied with the aim to illustrate how interdisciplinary approaches can leverage the potential of data science techniques for classical mechanical engineering challenges. In the first part, a deep learning Brake squeal detector is developed to identify several classes of typical friction Noise recordings. The detection method is rooted in recent computer vision techniques for object detection based on convolutional neural networks (CNN). It allows to overcome limitations of classical approaches that solely rely on instantaneous spectral properties of the recorded Noise. Results indicate superior detection and characterization quality when compared to a state-of-the-art Brake squeal detector. In the second part, a recurrent neural network (RNN) is employed to learn the parametric patterns that determine the dynamic stability of an operating Brake system. Given a set of multivariate loading conditions, the RNN learns to predict the Noise generation of the structure. The validated RNN represents a virtual twin model for the squeal behavior of a specific Brake system. It is found that this model can predict the occurrence and the onset of Brake squeal with high accuracy and that it can identify the complicated patterns and temporal dependencies in the loading conditions that drive the dynamical structure into regimes of instability. Large data sets from commercial Brake system testing are used to train and validate the models. This work is a contribution to the MSSP Special Issue in Honor of Professor Lothar Gaul.