A NEW METHOD FOR ANALYZING DISPERSED BAR GAUGE DATA

被引:20
作者
LEE, CKB
CRAWFORD, RC
机构
[1] Logicon RDA, Los Angeles, CA
关键词
D O I
10.1088/0957-0233/4/9/003
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A new method is developed for analysing dispersed stress (or strain) signals from a Hopkinson bar. In this method the incident signal is written as a rectangular-windowed Fourier series. It treats dispersion by accounting for both the time of arrival of the various frequencies and the associated phase shifts in a dispersed signal. An analysis of a shock wave generated by a sphere of high explosives in a water tank shows that this method gives better resolved peaks than the existing FFT method, for signals from blast waves. It also gives an indication of when components exist in the signal that are not due to dispersive propagation.
引用
收藏
页码:931 / 937
页数:7
相关论文
共 14 条
[1]   PROPAGATION OF ELASTIC-WAVES IN A CYLINDRICAL BAR SUBJECT TO A MOVING LOAD ON ITS LATERAL SURFACE [J].
BAUM, DW ;
SMITH, WR .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1972, 52 (05) :1421-&
[2]  
COLEMAN P, 1991, COMMUNICATION
[3]   2ND MODE VIBRATIONS OF THE POCHHAMMER-CHREE FREQUENCY EQUATION [J].
CURTIS, CW .
JOURNAL OF APPLIED PHYSICS, 1954, 25 (07) :928-928
[5]   APPLICATION OF PIEZOELECTRIC BAR GAUGE TO SHOCK TUBE STUDIES [J].
EDWARDS, DH ;
LAWRENCE, TR ;
DAVIES, L .
JOURNAL OF SCIENTIFIC INSTRUMENTS, 1964, 41 (10) :609-+
[6]   ELASTIC STRAIN PRODUCED BY SUDDEN APPLICATION OF PRESSURE TO ONE END OF A CYLINDRICAL BAR .1. THEORY [J].
FOLK, R ;
FOX, G ;
SHOOK, CA ;
CURTIS, CW .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1958, 30 (06) :552-558
[7]   ELASTIC STRAIN PRODUCED BY SUDDEN APPLICATION OF PRESSURE TO ONE END OF A CYLINDRICAL BAR .2. EXPERIMENTAL OBSERVATIONS [J].
FOX, G ;
CURTIS, CW .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1958, 30 (06) :559-563
[8]   A NUMERICAL-METHOD FOR THE CORRECTION OF DISPERSION IN PRESSURE BAR SIGNALS [J].
GORHAM, DA .
JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1983, 16 (06) :477-479
[9]  
Kolsky H., 1963, STRESS WAVES SOLIDS
[10]  
LEE CKB, 1992, RDATR222612301001 LO