The Experts below are selected from a list of 81 Experts worldwide ranked by ideXlab platform

Alaattin Aktas - One of the best experts on this subject based on the ideXlab platform.

  • enhancement of load carrying capacity of Corner Joints in case type furniture
    Materials & Design, 2012
    Co-Authors: Nurdan Cetin Yerlikaya, Alaattin Aktas
    Abstract:

    Abstract In this study, the failure loads of L-type Corner Joints in case-type furniture have been analyzed experimentally and statistically in laminated medium-density fiberboard material. The failure loads of five Corner Joints have been analyzed experimentally under tension and compression moments; these Joint types are glass-fiber composite layer (C), dowel (D), dowel + composite layer (DC), dowel + minifix (DM), and dowel + minifix + composite layer (DMC). The test results were analyzed statistically by Weibull distribution to obtain a 95% reliability level for failure load. Tests were carried out according to ASTM Standards. Results show that the failure load takes its highest value in the DMC case for both average values of the test results and for 95% reliability under Weibull distribution. On the other hand, it takes its lowest value in the D case. In addition, the 95% reliability value for each Corner Joint configuration is approximately equivalent to the 0.53 average value of the failure load.

Alexander Kaplan - One of the best experts on this subject based on the ideXlab platform.

  • analysis of a fibre laser welding case study utilising a matrix flow chart
    Applied Surface Science, 2011
    Co-Authors: Jan Karlsson, Alexander Kaplan
    Abstract:

    Abstract For fibre laser welding of an eccentric Corner Joint, the quality of the resulting weld cross section was studied with respect to the dependence on process parameters like lateral laser beam alignment, beam inclination, focal plane position or welding speed. The complex load situation of the support beamer was simplified to bending of one Corner. Due to fatigue load, the weld properties causing the peak stress are essential, in particular the top and root shape of the weld cross section. For the parameters varied, the resulting shapes were categorized into different top and root classes, determined by certain key dimensions, considering also welding defects like undercuts. The shapes are boundary conditions for Finite Element Analysis of the Joint under load for quantitative comparative analysis of the maximum stress. As two high strength steel grades were joined, the hardness transition across the weld was of interest, too. High speed imaging of the weld pool surface shape provided additional information on the relation between the parameter input and quality output. The different trends identified were discussed and guidelines were derived. As the systematic documentation of results is unsatisfactory in welding, a new method was developed and applied for the first time, called the Matrix Flow Chart. It enables an illustrative view on the resulting welding trends in a combined manner and is extendable by other researchers.

Kai Qian - One of the best experts on this subject based on the ideXlab platform.

  • performance of three dimensional reinforced concrete beam column substructures under loss of a Corner column scenario
    Journal of Structural Engineering-asce, 2013
    Co-Authors: Kai Qian
    Abstract:

    AbstractThe vulnerability of conventional RC structures to structural failure caused by the loss of Corner columns has been emphasized over the past years. However, the lack of experimental tests has led to a gap in the knowledge for the design of RC building structures to mitigate the likelihood of progressive collapse caused by losing a ground Corner column. Seven one-third scale RC beam-column substructures were tested to investigate their performance. The variables selected for the test specimens included beam transverse reinforcement ratios, type of design detailing (nonseismic or seismic), and beam span aspect ratios. Shear failure was observed to have occurred in the Corner Joint, and a plastic hinge was formed at the beam end near the fixed support in the nonseismic detailed specimens. However, plastic hinges were also formed in the beam end near to the Corner Joint for the seismically detailed specimen. Vierendeel action was identified as the major load redistribution mechanism before severe fail...

Mustafa Yildirim - One of the best experts on this subject based on the ideXlab platform.

  • free vibration analysis and design of an adhesively bonded Corner Joint with double support
    Journal of Adhesion, 2007
    Co-Authors: Kemal M Apalak, Recep Ekici, Mustafa Yildirim
    Abstract:

    This study carries out the three dimensional free vibration analysis of an adhesively bonded Corner Joint and investigates the effect of an additional horizontal support to the adhesive Corner Joint with single support on the first ten natural frequencies and mode shapes. In the presence of a horizontal support the effects of the vertical support length, the adhesive thickness, the plate thickness, and the Joint length on the natural frequencies and modal strain energies of the adhesive Joint were also investigated using the back-propagation Artificial Neural Network (ANN) method and the finite element method. The natural frequencies and modal strain energies increased with increasing plate thickness, whereas an adverse effect was observed for increasing Joint length. Both horizontal and vertical support lengths exhibited similar effects but the adhesive thickness had a negligible effect. The plate thickness and the Joint length are dominant geometrical parameters in comparison with both horizontal and ve...

  • optimal design of an adhesively bonded Corner Joint with single support based on the free vibration analysis
    Journal of Adhesion Science and Technology, 2006
    Co-Authors: Kemal M Apalak, Recep Ekici, Mustafa Yildirim
    Abstract:

    This study investigates the three-dimensional free vibration behaviour of an adhesively-bonded Corner Joint with single support. The modulus of elasticity, Poisson's ratio and density of adhesive were found to have negligible effects on the first 10 natural frequencies and mode shapes of the Corner Joint. The effects of the geometrical parameters, such as support length, plate thickness, adhesive thickness and Joint length, on the natural frequencies, mode shapes and modal strain energies of the adhesive Joint were also investigated using both the finite element method and the back-propagation artificial neural network (ANN) method. The free vibration and stress analyses were carried out for the Corner Joints with various random geometrical parameters so that a suitable ANN model could be trained successfully. The support length, plate thickness and Joint length all played important roles in the natural frequencies, mode shapes and modal strain energies of the Corner Joint, whereas the adhesive thickness ...

Nurdan Cetin Yerlikaya - One of the best experts on this subject based on the ideXlab platform.

  • enhancement of load carrying capacity of Corner Joints in case type furniture
    Materials & Design, 2012
    Co-Authors: Nurdan Cetin Yerlikaya, Alaattin Aktas
    Abstract:

    Abstract In this study, the failure loads of L-type Corner Joints in case-type furniture have been analyzed experimentally and statistically in laminated medium-density fiberboard material. The failure loads of five Corner Joints have been analyzed experimentally under tension and compression moments; these Joint types are glass-fiber composite layer (C), dowel (D), dowel + composite layer (DC), dowel + minifix (DM), and dowel + minifix + composite layer (DMC). The test results were analyzed statistically by Weibull distribution to obtain a 95% reliability level for failure load. Tests were carried out according to ASTM Standards. Results show that the failure load takes its highest value in the DMC case for both average values of the test results and for 95% reliability under Weibull distribution. On the other hand, it takes its lowest value in the D case. In addition, the 95% reliability value for each Corner Joint configuration is approximately equivalent to the 0.53 average value of the failure load.