The Experts below are selected from a list of 2016 Experts worldwide ranked by ideXlab platform
R. Govan - One of the best experts on this subject based on the ideXlab platform.
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ACOUSTIC EMISSION MULTI-PARAMETER ANALYZER--AEMPA
2016Co-Authors: L. J. Graham, R. Govan, R. K. Elsley, G. Lindberg, R. L. RandallAbstract:A multi-parameter measurement system was designed and built to process signals from acoustic emis-sion (AE) transducers in real time. The system makes selected measurements of each detected AE event as it occurs and stores 23 measured parameters which describe that event in digital form on a standard Diskette with IBM format. Measurements recorded on the Diskette include information on the shape, mag-nitude, and frequency content of each AE burst, its timing with respect to location on the specimen under test and its timing with respect to load conditions, pressure, test time, and event count. Over 8000 AE events can be stored on a s~ngle Diskette at a maximum instantaneous rate.of 6000 events/sec and a maximum average rate of 1000 events/sec. Two floppy disk units are included in the system so one can be operational while the Diskette is being changed in the other. After a specimen test, the data are transmitted to a remote minicomputer with a standard RS232 interface. Rapid analysis and display of the data by the computer has been demonstrated using up to 8 of the AE parameters at one time in a pattern recognition routine
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ACOUSTIC EMISSION MULTI-PARAMETER ANALYZER--AEMPA
2016Co-Authors: L. J. Graham, R. Govan, R. K. Elsley, G. Lindberg, R. L. Randall, Rockwell InternationalAbstract:A multi-parameter measurement system was designed and built to process signals from acoustic emis-sion (AE) transducers in real time. The system makes selected measurements of each detected AE event as it occurs and stores 23 measured parameters which describe that event in digital form on a standard Diskette with IBM format. Measurements recorded on the Diskette include information on the shape, mag-nitude, and frequency content of each AE burst, its timing with respect to location on the specimen under test and its timing with respect to load conditions, pressure, test time, and event count. Over 8000 AE events can be stored on a s~ngle Diskette at a maximum instantaneous rate.of 6000 events/sec and a maximum average rate of 1000 events/sec. Two floppy disk units are included in the system so one ca
L. J. Graham - One of the best experts on this subject based on the ideXlab platform.
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ACOUSTIC EMISSION MULTI-PARAMETER ANALYZER--AEMPA
2016Co-Authors: L. J. Graham, R. Govan, R. K. Elsley, G. Lindberg, R. L. RandallAbstract:A multi-parameter measurement system was designed and built to process signals from acoustic emis-sion (AE) transducers in real time. The system makes selected measurements of each detected AE event as it occurs and stores 23 measured parameters which describe that event in digital form on a standard Diskette with IBM format. Measurements recorded on the Diskette include information on the shape, mag-nitude, and frequency content of each AE burst, its timing with respect to location on the specimen under test and its timing with respect to load conditions, pressure, test time, and event count. Over 8000 AE events can be stored on a s~ngle Diskette at a maximum instantaneous rate.of 6000 events/sec and a maximum average rate of 1000 events/sec. Two floppy disk units are included in the system so one can be operational while the Diskette is being changed in the other. After a specimen test, the data are transmitted to a remote minicomputer with a standard RS232 interface. Rapid analysis and display of the data by the computer has been demonstrated using up to 8 of the AE parameters at one time in a pattern recognition routine
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ACOUSTIC EMISSION MULTI-PARAMETER ANALYZER--AEMPA
2016Co-Authors: L. J. Graham, R. Govan, R. K. Elsley, G. Lindberg, R. L. Randall, Rockwell InternationalAbstract:A multi-parameter measurement system was designed and built to process signals from acoustic emis-sion (AE) transducers in real time. The system makes selected measurements of each detected AE event as it occurs and stores 23 measured parameters which describe that event in digital form on a standard Diskette with IBM format. Measurements recorded on the Diskette include information on the shape, mag-nitude, and frequency content of each AE burst, its timing with respect to location on the specimen under test and its timing with respect to load conditions, pressure, test time, and event count. Over 8000 AE events can be stored on a s~ngle Diskette at a maximum instantaneous rate.of 6000 events/sec and a maximum average rate of 1000 events/sec. Two floppy disk units are included in the system so one ca
R. L. Randall - One of the best experts on this subject based on the ideXlab platform.
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ACOUSTIC EMISSION MULTI-PARAMETER ANALYZER--AEMPA
2016Co-Authors: L. J. Graham, R. Govan, R. K. Elsley, G. Lindberg, R. L. RandallAbstract:A multi-parameter measurement system was designed and built to process signals from acoustic emis-sion (AE) transducers in real time. The system makes selected measurements of each detected AE event as it occurs and stores 23 measured parameters which describe that event in digital form on a standard Diskette with IBM format. Measurements recorded on the Diskette include information on the shape, mag-nitude, and frequency content of each AE burst, its timing with respect to location on the specimen under test and its timing with respect to load conditions, pressure, test time, and event count. Over 8000 AE events can be stored on a s~ngle Diskette at a maximum instantaneous rate.of 6000 events/sec and a maximum average rate of 1000 events/sec. Two floppy disk units are included in the system so one can be operational while the Diskette is being changed in the other. After a specimen test, the data are transmitted to a remote minicomputer with a standard RS232 interface. Rapid analysis and display of the data by the computer has been demonstrated using up to 8 of the AE parameters at one time in a pattern recognition routine
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ACOUSTIC EMISSION MULTI-PARAMETER ANALYZER--AEMPA
2016Co-Authors: L. J. Graham, R. Govan, R. K. Elsley, G. Lindberg, R. L. Randall, Rockwell InternationalAbstract:A multi-parameter measurement system was designed and built to process signals from acoustic emis-sion (AE) transducers in real time. The system makes selected measurements of each detected AE event as it occurs and stores 23 measured parameters which describe that event in digital form on a standard Diskette with IBM format. Measurements recorded on the Diskette include information on the shape, mag-nitude, and frequency content of each AE burst, its timing with respect to location on the specimen under test and its timing with respect to load conditions, pressure, test time, and event count. Over 8000 AE events can be stored on a s~ngle Diskette at a maximum instantaneous rate.of 6000 events/sec and a maximum average rate of 1000 events/sec. Two floppy disk units are included in the system so one ca
Rockwell International - One of the best experts on this subject based on the ideXlab platform.
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ACOUSTIC EMISSION MULTI-PARAMETER ANALYZER--AEMPA
2016Co-Authors: L. J. Graham, R. Govan, R. K. Elsley, G. Lindberg, R. L. Randall, Rockwell InternationalAbstract:A multi-parameter measurement system was designed and built to process signals from acoustic emis-sion (AE) transducers in real time. The system makes selected measurements of each detected AE event as it occurs and stores 23 measured parameters which describe that event in digital form on a standard Diskette with IBM format. Measurements recorded on the Diskette include information on the shape, mag-nitude, and frequency content of each AE burst, its timing with respect to location on the specimen under test and its timing with respect to load conditions, pressure, test time, and event count. Over 8000 AE events can be stored on a s~ngle Diskette at a maximum instantaneous rate.of 6000 events/sec and a maximum average rate of 1000 events/sec. Two floppy disk units are included in the system so one ca
Lin Junsha - One of the best experts on this subject based on the ideXlab platform.
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crack initiation point determination and dynamic fracture toughness for charpy pre cracked specimen
Acta Metallurgica Sinica, 1992Co-Authors: Lin JunshaAbstract:The method to detect the crack initiation point of Charpy pre-cracked specimen under dynamic loading was studied using strain gauge. The load-time curve and nominal strain-time curve at the crack tip for impact testing specimens may be simultaneously measured by twin-channel oscilloscope with high speed sampling and Diskette storing. Based on the dy- namic finite element simulation of impact response of Charpy specimen, the measuring method of dynamic fracture toughness was analysed and some problems in previous dynamic fracture toughness measurement were discussed.