Automation In Fatigue And Fracture
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Author | : Arthur A. Braun |
Publisher | : ASTM International |
Total Pages | : 157 |
Release | : 1997 |
Genre | : Fracture mechanics |
ISBN | : 0803124163 |
From a November 1995 symposium in Norfolk, Virginia 11 papers report on how computers are playing an ever greater role in testing for fatigue and fracture as applications have become more sophisticated and hardware smaller and more powerful over the past few years. Covering data acquisition, simulat
Author | : Arthur A. Braun |
Publisher | : ASTM International |
Total Pages | : 250 |
Release | : 2002 |
Genre | : Fatigue testing and analysis |
ISBN | : 0803128908 |
Author | : C. Amzallag |
Publisher | : ASTM International |
Total Pages | : 668 |
Release | : 1994 |
Genre | : Fracture mechanics |
ISBN | : 0803119852 |
Author | : Arthur A. Braun |
Publisher | : ASTM International |
Total Pages | : 295 |
Release | : 1990 |
Genre | : Fracture mechanics |
ISBN | : 080311401X |
Provides both specific and general information regarding state-of-the art materials testing using automation technology as a means of: improving the reliability of data; eliminating the need for constant operator supervision; running tests that would be impossible without a computer; and reducing an
Author | : Claude Amzallag |
Publisher | : |
Total Pages | : 665 |
Release | : 1994 |
Genre | : |
ISBN | : 9780803119857 |
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1997 |
Genre | : |
ISBN | : |
Author | : Peter C. McKeighan |
Publisher | : |
Total Pages | : 172 |
Release | : 2014-11 |
Genre | : Fatigue testing machines |
ISBN | : 9780803175877 |
Author | : RK. Nanstad |
Publisher | : |
Total Pages | : 14 |
Release | : 1990 |
Genre | : Analog-to-digital converter |
ISBN | : |
A computer-controlled system consisting of a servohydraulic test machine, an in-house designed test controller, and a desktop computer has been developed for performing automated fracture toughness and fatigue crack growth testing both in the laboratory and in hot cells for remote testing of irradiated specimens. Both unloading compliance and dc-potential drop can be used to monitor crack growth. The test controller includes a dc-current supply programmer, a function generator for driving the servohydraulic test machine to required test outputs, five measurement channels (each consisting of low-pass filter, track/hold amplifier, and 16-bit analog-to-digital converter), and digital logic for various control and data multiplexing functions. The test controller connects to the computer via a 16-bit wide photoisolated bidirectional bus. The computer, a Hewlett-Packard Series 200/300, inputs specimen and test parameters from the operator, configures the test controller, stores test data from the test controller in memory, does preliminary analysis during the test, and records sensor calibrations, specimen and test parameters, and test data on flexible diskette for later recall and analysis with measured initial and final crack length information. During the test, the operator can change test parameters as necessary.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2014 |
Genre | : |
ISBN | : 9780803175884 |
Author | : GA. Hartman |
Publisher | : |
Total Pages | : 16 |
Release | : 1990 |
Genre | : Automation |
ISBN | : |
Successful selection of a material test automation strategy, hardware, and software depends on careful evaluation of the requirements of the target laboratory. Some of the criteria include the type of testing (single event, continuous), the laboratory mission (basic research, production testing, quality assurance), the operator's level of understanding of the testing and automation system, the available laboratory space, and the financial constraints. This paper discusses automation strategy, hardware, and software that have been used to automate a basic research laboratory performing fatigue crack propagation testing under a variety of test conditions including elevated temperatures.