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Showing 1 to 11 of 11 for “"Spot Weld"”.
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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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Wireless sensor networks and their industrial applications
… the automotive industry aims to improve recent spot weld monitoring techniques which determine the quality and integrity of a spot weld in real-time.
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Ultrasonic phased array imaging and data post processing with applications to resistance spot welding
Resistance spot welding is a widely used metal joining method in the automotive industry due to its low cost, ease of automation and high throughput. Resistance spot welding is a process that joins two or more metal sheets through the application of force and high current in a localized region, or …
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A Fatigue Life Prediction Method for Tensile-Shear Spot Welds
… predicts the fatigue resistance of tensile-shear spot welds under constant amplitude loading test. The TSIP model consists of Stage I--fatigue crack initiation and early growth, Stage II--through sheet thickness crack propagation, and Stage III--across sheet width crack propagation. The …
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Parametric Studies Based Mechanical and Thermal Modelling of Spot Welded Joints
… framework for the investigation of spot weld properties and performance. An Inverse temperature measurement approach has been established to predict the thermal history of a spot welded joints using remote thermocouples. This method incorporated the experimental data into an …
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A statistical analysis of the fatigue behaviour of single and multi-spot welded joints.
… predictions for the fatigue properties of a spot welded joint based on geometric data. However, the accuracy of these models tends to diminish as the number of spot welds and complexity of the joint increases. This thesis reports on the findings of an investigative study to assess the …
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Strength of Arc Spot Welds Made in Single and Multiple Steel Sheets
… was to establish a relationship between arc spot weld shear strength and the arc time used to form the weld. Lap shear tests were performed on both 3/4 in. and 5/8 in. nominal diameter welds. Each weld was formed in one-, two-, or four-layers of sheet steel ranging from 22 gauge (0.028 in.) …
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Acousto-Ultrasonic Evaluation of Cyclic Fatigue of Spot Welded Structures
… explore the damage development in tensile shear spot welds during fatigue loading. There is reasonable data to support the hypothesis that a decrease in an AU signal is indicative of the presence of an internal crack and could be used for monitoring and evaluation purposes.
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Spot Friction Welding of Ultra High-Strength Automotive Sheet Steel
<p>Spot friction welding (SFW) was performed on ultra high strength steel (UHSS) steel sheet commonly used in automobile manufacturing. Alloys studied included DP780, DP780EG, DP980, and DF140T sheet steel of varying thickness from 1.2 mm to 1.4 mm. Welding was accomplished using a PCBN standard …