Academic literature on the topic 'Sheet-metal Defects'
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Journal articles on the topic "Sheet-metal Defects"
Sheu, Ruey-Kai, Lun-Chi Chen, Mayuresh Sunil Pardeshi, Kai-Chih Pai, and Chia-Yu Chen. "AI Landing for Sheet Metal-Based Drawer Box Defect Detection Using Deep Learning (ALDB-DL)." Processes 9, no. 5 (April 27, 2021): 768. http://dx.doi.org/10.3390/pr9050768.
Full textQin, Lei, Jun Yan Liu, and Bin Jiang. "Simulation and Experimental Research of Sheet Metal Defect Detection Based on Ultrasonic Lock-in Thermography." Advanced Materials Research 602-604 (December 2012): 2283–86. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.2283.
Full textHan, Bao An, Hui Yu Xiang, Zhe Li, and Jia Jun Huang. "Defects Detection of Sheet Metal Parts Based on HALCON and Region Morphology." Applied Mechanics and Materials 365-366 (August 2013): 729–32. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.729.
Full textZhang, Zhong Ning, and Jian Tian. "The Research of De-Gassing with Silicon Powder Gapping for Remote Laser Welding of Zinc Coated Sheet Metal." Advanced Materials Research 548 (July 2012): 250–53. http://dx.doi.org/10.4028/www.scientific.net/amr.548.250.
Full textTian, Jian, and Zhong Ning Zhang. "The De-Gassing Evaluation with Full Penetration for Remote Laser Welding of Zinc Coated Sheet Metal." Advanced Materials Research 496 (March 2012): 272–75. http://dx.doi.org/10.4028/www.scientific.net/amr.496.272.
Full textSEGAWA, Yuji, Takuya KURIYAMA, Keisuke TAKEDA, Hiroshi HARADA, Yasuo MARUMO, Yasuhiro IMAMURA, Tomohiro NONAKA, and Yutaka SAKATA. "Ultrasonic Reflection Characteristics of Defects in Sheet Metal Forming." Journal of the Japan Society for Technology of Plasticity 63, no. 737 (2022): 79–85. http://dx.doi.org/10.9773/sosei.63.79.
Full textD'Acquisto, Leonardo, and Livan Fratini. "Shape Defects Measurement in 3D Sheet Metal Stamping Processes." International Journal of Forming Processes 5, no. 2-3-4 (December 30, 2002): 287–98. http://dx.doi.org/10.3166/ijfp.5.287-298.
Full textRamteke, Mr Sunny S. "Experimental Study on Removing Wrinkle Defect." International Journal for Research in Applied Science and Engineering Technology 10, no. 6 (June 30, 2022): 4933–47. http://dx.doi.org/10.22214/ijraset.2022.45138.
Full textGuntara, Dicky, and Putri Welda Utami Ritonga. "Perbedaan teknik pencetakan two step dengan spacer coping metal dan polyethylene sheet terhadap cacat permukaan dan akurasi dimensi model kerja gigi tiruan cekatDifference between two step printing techniques with spacer coping metal and polyethylene sheet to surface defects and dimensional accuracy of fixed denture working models." Padjadjaran Journal of Dental Researchers and Students 3, no. 2 (November 9, 2019): 120. http://dx.doi.org/10.24198/pjdrs.v3i2.23798.
Full textBraun, Q., Dirk Hortig, and Marion Merklein. "Characterizing Influence Parameters in Pulsed Phase Thermography for Defect Detection in Sheet Metal Parts." Key Engineering Materials 549 (April 2013): 521–28. http://dx.doi.org/10.4028/www.scientific.net/kem.549.521.
Full textDissertations / Theses on the topic "Sheet-metal Defects"
Fallahiarezoodar, Ali fallahiarezoodar. "PREDICTION AND REDUCTION OF DEFECTS IN SHEET METAL FORMING." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523879307901727.
Full textSakai, Paulo Roberto. "Caracterização de juntas soldadas em paw e gtaw de chapas finas em aço maraging 300 submetidas a vários reparos /." Guaratinguetá, 2015. http://hdl.handle.net/11449/132887.
Full textCoorientador: Marcelo dos Santos Pereira
Banca: Tomaz Manabu Hashimoto
Banca: Marcelino Pereira do Nascimento
Banca: Miguel Justino Ribeiro Barbosa
Banca: Dilermando Nagle Travessa
Resumo: Este trabalho tem como objetivo caracterizar mecanica e metalograficamente, juntas soldadas de chapas finas em aço Maraging 300, submetidas a até três reparos, usadas na fabricação de envelopes motores foguete a propelente sólido desenvolvidos no Instituto de Aeronáutica e Espaço (IAE) em atendimento às necessidades de sua gama de lançadores. O envelope motor atua como elemento estrutural e também possui a função primária de suportar a pressão de trabalho durante a queima do propelente. Atualmente, o envelope motor é fabricado em aço 300M-ESR e o IAE tomou a decisão de substituí-lo pelo aço Maraging 300. Em função dos processos existentes no Instituto, neste trabalho utilizaram-se os processos de soldagem Plasma Arc Welding - PAW com a técnica keyhole e Gas Tungsten Arc Welding - GTAW, ambos em passe único, com metal de adição. Antes de serem submetidas aos ensaios, as juntas passaram por inspeção não destrutiva de acordo com os critérios da norma AWS D17.1. Os reparos foram feitos de forma manual e processo GTAW. Amostras da junta soldada e reparadas foram submetidas a ensaios de tração, dureza Vickers (HV) por microindentações, análises químicas, análises metalográficas e fractográficas. Corpos de prova dos cordões adjacentes aos reparos também foram avaliados. Os resultados mostram que após a solda e reparos e o tratamento térmico de solubilização e envelhecimento, a zona fundida e a região da linha de fusão da solda apresentam uma dureza abaixo das outras regiões afetadas termicamente. Para as condições da solda sem reparo e reparadas, o processo PAW apresentou um valor menor de dureza em todas estas regiões com relação ao processo GTAW. As análises da superfície dos corpos de prova soldados rompidos indicam o predomínio de um processo de ruptura iniciado próximo à linha de fusão da solda e que se propaga em direção ao interior do ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This work aims at mechanic and metallographic characterization of Maraging 300 welded joints sheets, submitted to up to three repairs, used for the fabrication of solid propellant rocket motors at the Institute of Aeronautics and Space - IAE as to comply with its range of launchers. The rocket motor is a structural part and also has the primary function of supporting the nominal pressure during the propellant burning. At present, the rocket motor is fabricated in 300M-ESR steel and IAE has decided to replace such a steel for the Maraging 300 one. Due to IAE's existing processes, Plasma Arc Welding - PAW with the keyhole technique and the Gas Tungsten Arc Welding - GTAW have been used, both single-pass welding with filler. Before they have been submitted to the tests, the joints went through non-destructive inspection according to AWS D17.1 Standard. Manual repairs and GTAW process have been made. Samples of the welded and repaired joints were submitted to tensile testing, Vickers hardness, chemical analysis, fractrographic and metallographic analysis. Body tests of the beads adjacent to the repairs have also been assessed. Results show that after welding, repairs and solubilization and aging heating treatment, the melted zone as well as the weld joins lines zone present hardness below other heat affected zones. As for the conditions of the non-repaired and repaired welds, the PAW process has demonstrated lower hardness values in all zones in what regards the GTAW process. The welded and fractured body tests surfaces analysis indicate the predominance of a fracture process started next to the weld joins lines which goes towards the bead interior. The nature of the fracture has shown the predominance of dimples. The GTAW welded body tests presented higher mechanical strength than that of the PAW process. Similarly, the PAW welded body tests obtained from the beads of the zones ... (Complete abstract click electronic access below)
Doutor
TSAI, MING-YU, and 蔡明諭. "Defects prediction and bending die design optimization of hot dip galvanized sheet metal with inclined multi-stage features." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/09389721017698634672.
Full text國立高雄應用科技大學
模具工程系
97
This study focuses on the bending die design which can skip notching operation for bending of the galvanized sheet metal with inclined multi-stage features. Relief geometries were designed to cope with the offset profile punch to improve the wrinkling and material piling up in the conventional offset punch designs. Occurrence of wrinkling and fracturing defects is due to vertically off-plane bending line that is composed of non-continuous lines on the vertical plane. The offset punch profile with relief geometries was proposed to avoid the wrinkling and fracturing defects caused by extra material pile up in the vertically off-plane bending line corners. The effects of inclined angle of the pre-bent zigzag blank were studied to establish the applicability of the offset punch profile design. CAE method was integrated with the design of experiments (DOE) method to predict the material flow and study the effect of the different die and process design factors. Multi-relief punch design was proposed to control the material flow and pile up zone. The control point updating algorithm of a Bezier curve was applied to design the blank pre-cutting profile to minimize the zigzag of bending edge effectively. The simulation results had shown that wrinkling and fracturing defects will occur in case of the inclined angles lager than 80 degrees. The required relief width is proportional to the width of bending edge. The experimental results were in good agreement with the predictions of simulation. The proposed relieved offset punch design and edge pre-cutting profile were able to avoid defects of paint-scratching, wrinkling, fracturing, and zigzag of product edge.
Raimundo, Bruno Miguel Ribeiro. "Modelação e simulação numérica do processo de estampagem multi-etapa de um pedal de travão." Master's thesis, 2017. http://hdl.handle.net/10316/82940.
Full textAtualmente, o processo de conformação plástica de chapas metálicas é amplamente utilizado na indústria automóvel. A capacidade de resposta deste sector às crescentes exigências do mercado, com a qualidade e a brevidade necessárias, é devidamente aumentada com a utilização de ferramentas de apoio à produção, nomeadamente a aplicação de simulação numérica com o método de elementos finitos. Este instrumento é utilizado para a validação e otimização de ferramentas e parâmetros de processo de estampagem de chapas metálicas, nomeadamente com a previsão da ocorrência de defeitos, permitindo a redução de custos e ciclos de desenvolvimento do produto. Este trabalho tem como objetivo realizar a modelação e simulação do processo de estampagem multi-etapa de um componente automóvel, nomeadamente de um pedal de travão de um automóvel. A produção deste componente envolve corte por arrombamento e dobragem em ferramentas progressivas, sendo a simulação numérica realizada no programa de elementos finitos DD3IMP. As ferramentas de conformação são consideradas rígidas na simulação numérica, enquanto o pedal tem um comportamento elasto-plástico, descrito por um critério de plasticidade anisotrópico (Hill’48) e uma lei de encruamento isotrópico (Swift). Dois lotes do aço S420MC são utilizados na produção do pedal de travão, os quais são considerados na simulação, sendo que para um lote são observados defeitos de fissuração em zonas de corte por arrombamento. Relativamente à discretização espacial do corpo deformável, são utilizados elementos sólidos hexaédricos de 8 nós. A análise e comparação de resultados da simulação dos dois lotes de material, nomeadamente da deformação plástica equivalente, tensão de escoamento e trajetórias de deformação em alguns pontos estrategicamente escolhidos, demonstra os diferentes comportamentos dos dois lotes de materiais em estudo. Estas diferenças permitem efetuar conclusões que sustentam a presença/ausência de defeitos de fissuração nos produtos resultantes dos processos de estampagem multi-etapa. O aumento de camadas de elementos finitos em espessura do modelo numérico tem pouca influência nos resultados de deformação plástica equivalente e de tensão de escoamento nos pontos críticos analisados, permitindo a validação dos resultados com a discretização mais grosseira.
Nowadays, the sheet metal forming process is widely used in industry, especially in the automotive sector. The sector's answer to the increasing market requirements, with the necessary quality and briefness, is properly increased using production support tools, namely numerical simulation using the finite element method. This instrument is used for the validation and optimization of tools and parameters of the sheet metal forming process, namely with the prediction of defects, allowing the reduction of costs and product development cycles.This work aims to perform the modelling and simulation of the multi-stage sheet metal forming process of an automotive component, namely a car brake pedal. The production of this component involves blanking and bending in progressive tools, and the numerical simulation is performed in the DD3IMP finite element program. The conformation tools are considered rigid in the numerical simulation and their surfaces, while the pedal has an elasto-plastic behaviour described by an anisotropic yield criterion (Hill’48) and an isotropic hardening law (Swift). Two batches of S420MC steels used in the production of the brake pedal are considered in the simulation, where edge cracking is observed for one batch. Regarding to the spatial discretization of the deformable body, 8-node hexahedral solid elements are used.The analysis and comparison of simulation results of the two batches the material, namely the equivalent plastic strain, flow stress and strain paths at some strategically chosen points, demonstrates the different behaviours of the two batches of studied materials. These differences allow conclusions to be drawn that support the presence / absence of edge cracking in products resulting from multi-stage forming processes. The increase of finite element layers in thickness of the numerical model has little influence on the results of equivalent plastic strain and flow stress at the analysed critical points, allowing the validation of the results with the coarser discretization.
Books on the topic "Sheet-metal Defects"
Ollikainen, Mikael. Origins of production errors and significance of employee empowerment in reducing production error amount in sheet metal fabricating industry. Lappeenranta: Lappeenranta University of Technology, 2003.
Find full textSurface Defects on Hot-dip Metal Coated Steel Sheet. Woodhead Publishing, 1998.
Find full textG, Grünhofer H., and Verein Deutscher Eisenhüttenleute, eds. Oberflächenfehler an kaltgewalztem Band und Blech =: Surface defects on cold rolled strip and sheet = Les défauts de surface des feuillards et des tôles laminés à froid. Düsseldorf: Stahleisen, 1988.
Find full textBook chapters on the topic "Sheet-metal Defects"
Cleja-Ţigoiu, Sanda. "Anisotropic Damage in Elasto-plastic Materials with Structural Defects." In Multiscale Modelling in Sheet Metal Forming, 301–50. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44070-5_6.
Full textDib, Mario, Bernardete Ribeiro, and Pedro Prates. "Model Prediction of Defects in Sheet Metal Forming Processes." In Engineering Applications of Neural Networks, 169–80. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-98204-5_14.
Full textHenriques, M. P., T. J. Grilo, R. J. Alves de Sousa, and R. A. F. Valente. "Numerical Simulation and Prediction of Wrinkling Defects in Sheet Metal Forming." In Statistical and Computational Techniques in Manufacturing, 219–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25859-6_6.
Full textMortin, K. V., D. G. Privezentsev, and A. L. Zhiznyakov. "A System for Detecting and Detecting Defects in Sheet Metal on Grayscale Images." In Lecture Notes in Electrical Engineering, 427–35. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94202-1_40.
Full textSingh, Aru Ranjan, Thomas Bashford-Rogers, Sumit Hazra, and Kurt Debattista. "Deep Learning-Based Defect Inspection in Sheet Metal Stamping Parts." In The Minerals, Metals & Materials Series, 411–19. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06212-4_38.
Full textHambli, Ridha, Alain Potiron, Serge Boude, and Marian Reszka. "Fracture prediction of sheet-metal blanking process." In Advanced Methods in Materials Processing Defects, 125–34. Elsevier, 1997. http://dx.doi.org/10.1016/s0922-5382(97)80014-1.
Full textRees, D. W. A. "Instability analysis for ellipsoidal bulging of sheet metal." In Advanced Methods in Materials Processing Defects, 235–44. Elsevier, 1997. http://dx.doi.org/10.1016/s0922-5382(97)80025-6.
Full textBressan, J. D. "Material plastic properties defects and the formability of sheet metal." In Advanced Methods in Materials Processing Defects, 273–80. Elsevier, 1997. http://dx.doi.org/10.1016/s0922-5382(97)80029-3.
Full textBanabic, D. "Sheet metal formability predicted by using the new (1993) Hill's yield criterion." In Advanced Methods in Materials Processing Defects, 257–64. Elsevier, 1997. http://dx.doi.org/10.1016/s0922-5382(97)80027-x.
Full textGelin, J. C., and N. Boudeau. "Localization of deformation in thin shells with application to the analysis of necking in sheet metal forming." In Advanced Methods in Materials Processing Defects, 215–24. Elsevier, 1997. http://dx.doi.org/10.1016/s0922-5382(97)80023-2.
Full textConference papers on the topic "Sheet-metal Defects"
Murmu, Naresh C., and Roman Velgan. "Detection of defects in formed sheet metal using medial axis transformation." In Optical Metrology, edited by Wolfgang Osten, Malgorzata Kujawinska, and Katherine Creath. SPIE, 2003. http://dx.doi.org/10.1117/12.500529.
Full textJingDong, Lin, Huang Li, and Zhou HongBo. "Forming defects prediction for sheet metal forming using Gaussian process regression." In 2017 29th Chinese Control And Decision Conference (CCDC). IEEE, 2017. http://dx.doi.org/10.1109/ccdc.2017.7978140.
Full textGarcia Zugasti, Pedro de Jesus, Erick M. Salcedo Murillo, Hugo I. Medellín Castillo, Dirk Frederik De Lange, and Juan Gabriel Sandoval Granja. "Sheet Metal Blank Development of a Deep Drawing Fan Support Using Theoretical Rules and FEM." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38537.
Full textRepin, Sergei, and Alexander Kupriyanov. "Algorithms based on neural network for segmentation of defects on metal sheet images." In 2021 International Conference on Information Technology and Nanotechnology (ITNT). IEEE, 2021. http://dx.doi.org/10.1109/itnt52450.2021.9649199.
Full textThuillier, Sandrine, Alban Le Port, and Pierre-Yves Manach. "Surface Defects in Sheet Metal Forming: a Simulative Laboratory Device and Comparison with FE Analysis." In THE 8TH INTERNATIONAL CONFERENCE AND WORKSHOP ON NUMERICAL SIMULATION OF 3D SHEET METAL FORMING PROCESSES (NUMISHEET 2011). AIP, 2011. http://dx.doi.org/10.1063/1.3623693.
Full textLe Port, A., S. Thuillier, C. Borot, and J. Charbonneaux. "Analysis, Simulation and Prediction of Cosmetic Defects on Automotive External Panel." In THE 8TH INTERNATIONAL CONFERENCE AND WORKSHOP ON NUMERICAL SIMULATION OF 3D SHEET METAL FORMING PROCESSES (NUMISHEET 2011). AIP, 2011. http://dx.doi.org/10.1063/1.3623615.
Full textRagai, Ihab, and James A. Nemes. "Springback in Sheet Metal Forming of Stainless Steel 410." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34045.
Full textTsai, Sung-Yu, Brian Chen, and Jen-Yuan (James) Chang. "Evaluation of Sheet Metal Leveling Based on Elimination of Coilset Residual Stress." In ASME 2016 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/isps2016-9536.
Full textGayubo, F., J. L. Gonzalez, E. de la Fuente, F. Miguel, and J. R. Peran. "On-line machine vision system for detect split defects in sheet-metal forming processes." In 18th International Conference on Pattern Recognition (ICPR'06). IEEE, 2006. http://dx.doi.org/10.1109/icpr.2006.902.
Full textAndersson, A. "Evaluation and Visualization of Surface Defects — a Numerical and Experimental Study on Sheet-Metal Parts." In NUMISHEET 2005: Proceedings of the 6th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Process. AIP, 2005. http://dx.doi.org/10.1063/1.2011203.
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