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Showing 1 to 20 of 305 for “"weld"”.
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Weld inspection process improvement
This project addressed challenges within the weld inspection process in one factory at Caterpillar through the implementation of phased array ultrasonic testing. The chosen factory fabricates and machines large weldments for track-type tractors. The industry trend towards lighter weight, lower …
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Development and modelling of weld cooling time equations.
… investigates ways of developing and modelling weld cooling time equations. This is an important topic as the susceptibility of a weld's heat affected zone to hydrogen cracking is largely governed by the severity of the cooling portion of the weld's thermal cycle. The 800 to 500 °C cooling time …
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Three-Dimensional Photoelastic Investigation of Simulated Weld Discontinuities
Made available in DSpace on 2014-12-08T23:57:26Z (GMT). No. of bitstreams: 1 7021027.pdf: 4710526 bytes, checksum: a2f1e54c686129befedfa8a02987001b (MD5) Previous issue date: 1970
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Weld : fast data-parallel computation on modern hardware
… of peak hardware performance. We have developed Weld, an intermediate language and runtime that can run data-parallel computations efficiently on modern hardware. The core of Weld is a novel intermediate language (IL) that is expressive enough to capture common data-parallel applications (e.g., …
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Thermomechanical factors influencing weld metal hydrogen assisted cold cracking
… Cracking is a phenomena that manifests itself in weldments when a critical hydrogen concentration is trapped within a susceptible microstructure and subjected to a threshold level of stress and poses a significant threat to pipeline girth weld integrity, in particular the root pass of girth welds. …
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Heat distribution and weld bead geometry in arc welding
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1983.
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Vision and force controlled robot weld bead grinding system
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1988
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Predictive control of a robotic weld bead grinding system
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1989
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Ultrasonic Real-Time Quality Monitoring Of Aluminum Spot Weld Process
The real-time ultrasonic spot weld monitoring system, introduced by our research group, has been designed for the unsupervised quality characterization of the spot welding process. It comprises the ultrasonic transducer (probe) built into one of the welding electrodes and an electronics hardware …
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Effect of Weld Strength Mismatch on Elastic-Plastic Fracture Parameters
This study quantifies the effect of weld strength mismatch on applied J, applied CTOD, and crack-tip constraint for both remote tensile and bending loads. Very detailed elastic-plastic finite element models for a wide range of geometrical configurations and material properties provide the …
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Predicted Effects of Residual Stresses on Butt Weld Fatigue Life
Made available in DSpace on 2014-12-14T16:00:37Z (GMT). No. of bitstreams: 1 7811214.pdf: 3487716 bytes, checksum: 0c546889a9041bc640a3abb62ae421ed (MD5) Previous issue date: 1978
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Ship hull plating weld misalignment effects when subjected to tension
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.
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