.... Understanding the contribution of inherent residual stress in wrought Al 7050-T7451 plate, common in aircraft manufacture, to distortion of high-aspect-ratio machined parts is critical but remains problematic due to the alloy's low residual stress magnitude over large geometries. Prior investigations...

...Shekhar Srivastava; Rajiv Kumar Garg; Anish Sachdeva; Vishal S. Sharma Accumulated heat input during layer deposition causes high residual stress in the Wire-Arc Additive Manufacturing (WAAM) components. The developed residual stress results in defects like distortion, delamination, cracks, and low...

... 11 02 2020 28 07 2020 28 07 2020 29 09 2020 welding manufacturing numerical model weld pool transport phenomena microstructure distortion residual stress process sensor machine learning deep learning CNN adaptive control model predictive control MPC control...

...Jack Francis; Arman Sabbaghi; M. Ravi Shankar; Morteza Ghasri-Khouzani; Linkan Bian Distortion in laser-based additive manufacturing (LBAM) is a critical issue that adversely affects the geometric integrity of additively manufactured parts and generally exhibits a complicated dependence...

... major sample shape distortion. The results are promising in that the 3DP process can be used to yield the prototype almost equivalent to a real part with a full mechanical capacity. 27 05 2009 17 09 2009 26 10 2009 CAD/CAM densification distortion microhardness net shape...

...Dongyul Lee; Ki Eak Kwon; Jaeyeol Lee; Haeseong Jee; Hyunjune Yim; Seong Wook Cho; Jong-Gye Shin; Gyubong Lee A general and efficient methodology has been developed to analyze dimensional variations of a welded assembly, taking into account of weld distortion. Weld distortion is generally...

... analysis. Boriding on as-received titanium articles resulted in shape distortion that hampered the subsequent polishing efforts. Hence, further articles were treated with stress-relief annealing prior to boriding, at temperatures below and above the β -transus of the substrate article. Annealing itself...

...Hua-Jun Zhang; Guang-Jun Zhang; Chun-Bo Cai; Hong-Ming Gao; Lin Wu Control welding residual stress and distortion is extremely important in manufacturing industry. Double-sided double arc welding (DSDAW), which can control residual stress and angular distortion, is developed. Because arc distance...

...Jun Xu; Wei Li This paper presents a dynamic thermal tensioning method to control the welding induced distortion under production variation. The new method determines the optimal thermal tensioning parameters based on real-time distortion measurements. The paper is focused on a systematic study...

... consideration of thermo-mechanical interactions and plasticity. Two distortion modes (angular shrinkage and tilting shrinkage) are investigated and applied to model welding distortion. Different criteria for minimization of welding distortion have been investigated, such as overall deformation or weighted...