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    • 3. 发明授权
    • Method of attaching strain gauges to various materials
    • 将应变计连接到各种材料的方法
    • US4767484A
    • 1988-08-30
    • US74792
    • 1987-07-17
    • Timothy D. SchottRobert L. FoxJohn D. Buckley
    • Timothy D. SchottRobert L. FoxJohn D. Buckley
    • B29C65/36G01L1/22H05B6/10B44C1/14B32B31/12B32B31/20B32B31/26
    • G01L1/2287B29C65/3644B29C66/472B29C66/8322Y10T156/1158
    • A method is provided to bond strain gauges 6 to various materials. First, a tape 9 with an adhesive backing 10 is placed across the inside of fixture frame 8. Strain gauge 6 is flatly placed against adhesive backing 10 and coated with a thin, uniform layer of adhesive 5. Tape 9 is then removed from fixture frame 8 and placed, strain gauge side down, on the material to be tested. If the material is a high reluctance material 12, induction heating source 20 is placed upon tape 9. If the material is a low reluctance material 13, a plate 23 with a ferric side 21 and a rubber side 22 is placed, ferric side down, onto tape 9. Induction heating source 20 is then placed upon rubber side 22. If the material is an insulator material 14, a ferric plate 7 is placed on tape 9. Induction heating source 20 is then placed on ferric plate 7. Inductive heating source 20 then generates frequency from 60 to 70 kilocycles to inductively heat either low reluctance material 13, ferric side 21, or ferric plate 21 and provides incidental pressure of approximately five pounds per square inch to tape 9 for two minutes, thoroughly curing adhesive 5. Induction heating source 20, and, if necessary, plate 23 or ferric plate 7, are then removed from tape 9 after one minute. Tape 9 is then removed from bonded strain gauge 6.
    • 提供了一种将应变计6粘合到各种材料上的方法。 首先,具有粘合剂背衬10的带9横跨固定框架8的内部放置。应变计6被平坦地放置在粘合剂背衬10上并涂覆有薄的均匀的粘合剂层5.然后将带9从夹具框架 8并将应变计侧面放置在要测试的材料上。 如果材料是高磁阻材料12,则感应加热源20被放置在带9上。如果材料是低磁阻材料13,则将具有铁质侧面21和橡胶侧22的板23放置在铁面侧, 然后将感应加热源20放置在橡胶侧22.如果材料是绝缘体材料14,则将铁板7放置在带9上。然后将感应加热源20放置在铁板7上。感应加热源 20然后产生60至70千圈的频率以感应加热低磁阻材料13,铁侧21或铁板21,并且向带9提供约5磅/平方英寸的附带压力2分钟,彻底固化粘合剂5.感应 加热源20,如有需要,然后在一分钟之后从带9上取下板23或铁板7。 然后将带9从结合的应变片6中取出。