AMMRC Automated Stress-Strain Data Analysis, Storage, and Retrieval. Part 1. Data Analysis Program.

摘要

As part of an in-house effort to improve physical standards and tolerances for materiel through the improvement of acceptance/rejection criteria, we have developed a procedure for computer processing, storage, and retrieval of mechanical properties data. In this report, which is the first of a three-part series, a system for computer-assisted stress-strain test data reduction and analysis is described. Autographic recordings of load-strain data are semi-automatically digitized on a remote graphics terminal coupled to a UNIVAC 1106 computer. Descriptor data are also entered into temporary memory of the computer. The analysis includes a calculation of the Ramberg-Osgood exponent and yield stress from which the stress-strain curve of the test material can be readily reproduced. The output of the analysis program consists of several optional printouts for each set of test data and a punch card containing coded descriptor data and a summary all the results for the test. The output punch cards serve as a hard copy data file of test results. The system has been applied to establish a file of tension test results. The procedures for establishing a computer data file of the test results and for retrieving the data are described in AMMRC TR 79-17, and listings of the FORTRAN symbolic programs used for data reduction, analysis, storage, and retrieval are given in AMMRC TR 79-18. (Author)