发明名称 |
Piezoelectric vibration exciter, especially for destructive material testing |
摘要 |
A piezoelectric vibration exciter for generating mechanical vibrations for the purpose of destructive material or specimen testing has two equally sized disk stacks, each with an even number of piezoceramic disks. A vibration armature serving as a clamping device for the test specimen is arranged between the two disk stacks in a stiff clamping frame having a bail and a base plate. The assembly containing the disk stacks and the vibration armature is clamped in position in the stiff clamping frame. The piezoceramic disks are energized with an AC voltage so that one disk stack will axially contract in phase with the voltage, while the other disk stack will axially expand. As a result, the vibration armature and the test specimen arranged between the disks reciprocate at the frequency of the AC voltage input.
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申请公布号 |
US4491759(A) |
申请公布日期 |
1985.01.01 |
申请号 |
US19840582252 |
申请日期 |
1984.02.22 |
申请人 |
MTU MOTOREN-UND TURBINEN-UNION MUENCHEN GMBH |
发明人 |
KUNZ, WERNER;VOIGT, WALTER |
分类号 |
B06B1/06;G01N3/38;G01N33/38;(IPC1-7):H01L41/08 |
主分类号 |
B06B1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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