发明名称 |
ULTRASCHALLIMPULSEINRICHTUNG ZUR PRUEFUNG VON BAUSTOFFEN |
摘要 |
<p>Building materials such as concrete and granite are tested for faults and fissures by subjecting them to pulsed ultrasonic waves to measure propagation time through the material. A pilot generator (1) is connected to a pulse generator (3) whose output drives an electroacoustic convertor transmitter (7) mounted on the surface of the construction material (8) under investigation. An electroacoustic receiver (9) with two resonators receives the transmitted signals. One resonator receives a direct signal while the other has an inbuilt delay. Both signals are amplified (12, 13) and multiplied (14). The signals are then formed into digital signals having time intervals. After processing the digital signals are converted into video signals.</p> |
申请公布号 |
DE2726847(A1) |
申请公布日期 |
1978.12.21 |
申请号 |
DE19772726847 |
申请日期 |
1977.06.14 |
申请人 |
VSESOJUZNYJ NAUTSCHNO-ISSLEDOVATELSKIJ INSTITUT PO RAZRABOTKE NERAZRUSCHAJUSCHICH METODOV I SREDSTV KONTROLJA KATSCHESTVA MATERIALOV VNIINK |
发明人 |
SERGEEVITSCH YAMSCHIKOV,VALERY;ALEKSEEVITSCH LUKASCHEV,ALEKSEI;GRIGORIEVITSCH AGASIEV,GRIGORY |
分类号 |
G01H5/00;G01N29/07;(IPC1-7):G01N29/04;G01N33/38 |
主分类号 |
G01H5/00 |
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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