The Experts below are selected from a list of 1008 Experts worldwide ranked by ideXlab platform
C H Wong - One of the best experts on this subject based on the ideXlab platform.
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Applications of non-destructive testing techniques for post-process control of additively manufactured parts
Virtual and Physical Prototyping, 2017Co-Authors: Q. Y. Lu, C H WongAbstract:This paper presents an overview on the principle of operation for post-process inspection non- destructive testing (NDT) techniques. The techniques include visual inspection, liquid penetrant testing, magnetic particle testing, eddy current testing, ultrasonic testing, and radiography. The applications of these NDT techniques in additive manufacturing (AM) and their suitability for defects detection of additively manufactured parts are reviewed. The sensitivity, and the advantages and disadvantages of each technique are evaluated. The types of defect, and the detectability of these defects by NDT techniques are assessed. The applicability of each NDT technique for different categories of AM process is discussed. The categories of AM are, namely, material extrusion, powder bed fusion, vat photopolymerisation, material jetting, binder jetting, Sheet Lamination, and directed energy deposition.
Rolf Mülhaupt - One of the best experts on this subject based on the ideXlab platform.
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Polymers for 3D Printing and Customized Additive Manufacturing
Chemical Reviews, 2017Co-Authors: Samuel Clark Ligon, Matthias Gurr, Juergen Stampfl, Robert Liska, Rolf MülhauptAbstract:Additive manufacturing (AM) alias 3D printing translates computer-aided design (CAD) virtual 3D models into physical objects. By digital slicing of CAD, 3D scan, or tomography data, AM builds objects layer by layer without the need for molds or machining. AM enables decentralized fabrication of customized objects on demand by exploiting digital information storage and retrieval via the Internet. The ongoing transition from rapid prototyping to rapid manufacturing prompts new challenges for mechanical engineers and materials scientists alike. Because polymers are by far the most utilized class of materials for AM, this Review focuses on polymer processing and the development of polymers and advanced polymer systems specifically for AM. AM techniques covered include vat photopolymerization (stereolithography), powder bed fusion (SLS), material and binder jetting (inkjet and aerosol 3D printing), Sheet Lamination (LOM), extrusion (FDM, 3D dispensing, 3D fiber deposition, and 3D plotting), and 3D bioprinting....
Tzuliang Bill Tseng - One of the best experts on this subject based on the ideXlab platform.
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a review on quality control in additive manufacturing
Rapid Prototyping Journal, 2018Co-Authors: Hoejin Kim, Yirong Lin, Tzuliang Bill TsengAbstract:The usage of additive manufacturing (AM) technology in industries has reached up to 50 per cent as prototype or end-product. However, for AM products to be directly used as final products, AM product should be produced through advanced quality control process, which has a capability to be able to prove and reach their desire repeatability, reproducibility, reliability and preciseness. Therefore, there is a need to review quality-related research in terms of AM technology and guide AM industry in the future direction of AM development.,This paper overviews research progress regarding the QC in AM technology. The focus of the study is on manufacturing quality issues and needs that are to be developed and optimized, and further suggests ideas and directions toward the quality improvement for future AM technology. This paper is organized as follows. Section 2 starts by conducting a comprehensive review of the literature studies on progress of quality control, issues and challenges regarding quality improvement in seven different AM techniques. Next, Section 3 provides classification of the research findings, and lastly, Section 4 discusses the challenges and future trends.,This paper presents a review on quality control in seven different techniques in AM technology and provides detailed discussions in each quality process stage. Most of the AM techniques have a trend using in-situ sensors and cameras to acquire process data for real-time monitoring and quality analysis. Procedures such as extrusion-based processes (EBP) have further advanced in data analytics and predictive algorithms-based research regarding mechanical properties and optimal printing parameters. Moreover, compared to others, the material jetting progresses technique has advanced in a system integrated with closed-feedback loop, machine vision and image processing to minimize quality issues during printing process.,This paper is limited to reviewing of only seven techniques of AM technology, which includes photopolymer vat processes, material jetting processes, binder jetting processes, extrusion-based processes, powder bed fusion processes, directed energy deposition processes and Sheet Lamination processes. This paper would impact on the improvement of quality control in AM industries such as industrial, automotive, medical, aerospace and military production.,Additive manufacturing technology, in terms of quality control has yet to be reviewed.
Subramanian Ramakrishnan - One of the best experts on this subject based on the ideXlab platform.
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Automated manufacturing and processing of fiber-reinforced polymer (FRP) composites: An additive review of contemporary and modern techniques for advanced materials manufacturing
Additive Manufacturing, 2017Co-Authors: Jolie Frketic, Tarik Dickens, Tarik J. Dickens, Subramanian RamakrishnanAbstract:High throughput automated techniques are nowadays playing a key role in polymer composite manufacturing in a number of industries such as automotive and aerospace. There is a need to produce high volume parts efficiently. Automated manufacturing methods such as automated tape layup and automated fiber placement can produce composite parts efficiently, and with the advent of additive manufacturing the complexity of these components are increasing. This paper will review contemporary composite manufacturing methods filament winding, automated tape layup, and automated fiber placement, and the newer automation techniques of robotic pick-and-place and continuous tow shearing. It also addresses recent advances in composite additive manufacturing using vat photopolymerization, binder jetting, material extrusion, Sheet Lamination and powder bed fusion. Methods, materials and testing results of the manufactured components will be discussed.
Q. Y. Lu - One of the best experts on this subject based on the ideXlab platform.
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Applications of non-destructive testing techniques for post-process control of additively manufactured parts
Virtual and Physical Prototyping, 2017Co-Authors: Q. Y. Lu, C H WongAbstract:This paper presents an overview on the principle of operation for post-process inspection non- destructive testing (NDT) techniques. The techniques include visual inspection, liquid penetrant testing, magnetic particle testing, eddy current testing, ultrasonic testing, and radiography. The applications of these NDT techniques in additive manufacturing (AM) and their suitability for defects detection of additively manufactured parts are reviewed. The sensitivity, and the advantages and disadvantages of each technique are evaluated. The types of defect, and the detectability of these defects by NDT techniques are assessed. The applicability of each NDT technique for different categories of AM process is discussed. The categories of AM are, namely, material extrusion, powder bed fusion, vat photopolymerisation, material jetting, binder jetting, Sheet Lamination, and directed energy deposition.