Published: Jan 1979
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The durability of prototypical machines often is evaluated in the ground vehicle industry by field testing the machine. This field test usually consists of a representative sample of the customer's operation. From this sample, a forecast of the crack propagation fatigue life can be made.
A portable computer installation with interactive programs has been developed. Timeliness of data reduction has improved drastically the impact that test results have on the design and development process.
A brief description of the data acquisition system is presented. Major emphasis is given to the procedures that reduce these data and to the methods of cataloging intermediate data. Examples are given for typical output and, finally, verification of the analysis and computer program is made by comparing the life estimates with results of actual component test results.
fatigue (materials), crack propagation, computer program, field test
Staff engineer, The Technical Center, Deere and Co., Moline, Ill.