Ultrasonic wave examination development summaryThe high velocity, the high efficiency is the modern industry symbol, but this is the establishment above the high grade foundation. The design and the craft personnel should understand that,Must a organizational structure, stochastically has microscopically, the macroscopic flaw, may sometimes even be frequently only can depend upon not damages the examination technology the utilization only then to give to discover, appraisal. Certainly, this with dozens of year in every way value and the general jobholders' difficult endeavor, causes not to damage the examination technology to have certain ability in this aspect to concern. Now, in the industry developed country, not damages the examination in the product design, the development, the user departments already by the fruitful utilization, in 1981 American former president Reagan in not damaged the examination academic society 40th anniversary congress to US in the letter of congratulations to say: “You can give the airplane and the spatial flight vehicle, the power plant, the ships, the automobile and the building and so on bring a greater degree the reliability. Not has not damaged the examination, we not impossible to enjoy at present in these domains and other domain leading status.”Not damages the examination by the swift and violent potential to the depth development, the objective need is after all the biggest power which one specialty may develop.Our country not damages the examination technology is grows out of nothing, develops gradually from the lower stage to the application popular present stage level. Ultrasonic wave instrumentation development production, also presses this rule development change approximately.The 50's, our country starts from the overseas introduction ultrasonic wave instrument, many is the unwieldy electronic tubular instrument. If England's UCT-2 ultrasonic wave instrumentation, reaches 24Kg again, various units do the experimental study work positively, has obtained the good effect in some project examination.At the end of the 50's at the beginning of 60's, the domestic scientific research unit imported Poland to produce the ultra acoustimeter, and carried on the imitation production. Afterwards, Shanghai Tongji University develops the CTS-10 nonmetallic supersonic instrumentation, also is the electron tubular, instrument heavy approximately 20Hg. This instrument performance is stable, the profile is clear. But at that time this kind of instrument only then the individual scientific research unit used, the construction work department used not not many. Until 70's intermediate stages, because not damaged the examination technology still to be at the experimental stage, the promotion has not popularized, therefore the instrument big development, still has not used the electronic tubular UCT-2,CTS-10.In 1976, after National Construction committee Office of Sciences managed holds the nation architectural engineering examination technology meeting, National Construction committee not damaged the concrete the examination technology to list as the key attack project, the organization nation 6 unit cooperation attack. Henceforth, not damages the examination technology to start to enter has the plan, has the goal research stage. Along with the electronics industry rapid development, the transistor unit has replaced the electron tube component gradually, is moreadvantageous to not damages the examination technology the promoted popularization. If the Romanian N2701 ultrasonic wave reflectoscope reflector, is composed by the transistor discrete component, has the profile and the numerical code demonstrated, instrument weight 10Kg. The 70's, English C.N.S Corporation promotes only has the 3.5Kg heavy PUNDIT portable ultra acoustimeter.In October, 1978, Chinese Construction Academy of science developed JC-2 portable ultrasonic wave instrumentation. This instrument uses the TTL line, the numerical code demonstrated that, the instrument weight is 5Kg. Develops same time the supersonic instrumentation also has SC-2, CTS-25, SYC-2 ultrasonic wave instrumentation. Henceforth, our country had the ultrasonic wave instrument which own produce, not damaged the examination technology for the promoted application to lay the good foundation.The ultrasonic wave examination technology is our country prioritize and the promoted new technology, it has the high accuracy, not damages, merits and so on non-contact. At present, already widely applied at the machine manufacture, the electronic metallurgy, the navigation, the astronavigation, the petroleum chemical industry, industry domains and so on transportation. In addition, in the materials science, the medicine, domains and so on in biological science also occupies has the important status. Overseas was enhancing the ultrasonic ranging aspect to do the massive research, the domestic some scholars have also done the correlation research. Mainly is decided to the ultrasonic ranging precision by the ultrasonic propagation time and the ultrasonic wave which measured in the medium propagation velocity, in the two the propagation time precision influence is big, therefore the majority of literature use reduce the propagation time the uncertainty to increase the range finder precision. At present, the phase survey law and the sound spectrum outline analytic method or the two unify the method is main reduces the survey transmission uncertainty the method.The ultrasonic wave examination technology took not damages one of examination technology important methods, is playing the vital role in its developing process, it has provided the appraisal solid state material microscopic organization and the correlation mechanics performance, examines its microscopic and the macroscopic discontinous effective general method. As a result of its signal high-frequency response, the ultrasonic wave examination early time only uses the simulation quantity signal the analysis, the majority of check-out facility only has the A scanning form, needs through experienced not to damage examines the personnel to carry on the artificial analysis to the signal to be able to draw the correct conclusion, to examines is high with analysis staff's request, therefore, the human factor is big to the examination result influence, the profile not easy to record and the preservation, is not suitable completes the automated examination.The 80's later periods, as a result of the computer technology and the high speed component unceasing development, make the ultrasonic wave signal the digitization to gather and possibly to analyze into. At present domestic also one after another appeared each kind of digitized ultrasonic wave check-out facility, and has become the ultrasonic wave examination the development direction. Xiamen University's some scholar has studied one echo outline analytic method. This method seeks the echo enveloping curve in the range finder through two surveys to obtain the echo beginning, after like this processed the ultrasonic propagation time precision to obtain the very big enhancement. Italy's Carullo et al. introduced one kind of self-adaptive system, uses the special launch profile to obtain the good echo envelope, simultaneously uses to the ambient noisecarries on the estimation, establishes certain echo Kaiping electric circuit, also uses the automatic gain the control amplifier, enhances the ultrasonic wave through these measures the survey precision. Moreover, also has the massive literature research to use the digital signal processing technology and the wavelet transformation theory enhances the transmission time the precision. These processing method has all obtained the good effect.At present domestic and foreign all turns towards the digitized direction in the ultrasonic wave examination domain to develop, the digital ultrasonic wave instrumentation development speed is very quick. The home also one after another appeared many digital ultrasonic wave instruments and the analysis system in recent years. On international takes extremely to the ultrasonic wave examination digitization technology research, the overseas production similar product and the research company has US's Pan-America (PANAMETRICS) Corporation, METEC Corporation, Canada's R/D TECH Corporation, Germany's K-K Corporation, France's SOFRATEST Corporation and Spain's TECNATOM Corporation and so on, the above these companies produce ultrasonic wave examination gathering, the analysis and the image formation processing system technical level is high, is in the leading level in the world.Along with examination engineering research unceasingly thorough, is more and more high to the supersonic instrumentation function request, the single numerical code demonstrated the supersonic examination instrumental measurement reads can bring the big test error. Further requests the ultra acoustimeter which later will produce to be able to have double reveals and the inner tube has the single trigger micro processing function. Afterwards has the examination, the record, the memory, the data processing and the analysis and so on many function intellectualized examination analyzer develops one after another successfully. The ultra acoustimeter development presents a prosperous scene. Among them, the coal academy of science develops 2000A supersonic analysis instrumentation, is one kind of inner tube microprocessor intellectualization metering equipment, operates completely all is in the microprocessor under the control management, all observed values, the processing result, the condition information all demonstrated on the teletron, and may meet the miniature printer printing. Its numeral and the profile quite are all clear stably, the operation is simple, the reliability is high, has the power failure memory function, its serial port may facilitate the user to carry on the post-processing and the related procedure development to the instrument test data. Compares with the domestic similar product, design novel reasonable, the function is complete, has the significant breakthrough and the innovation in the instrument design, has achieved the international advanced level.At present, the computer market price large scale drop, uses the non-integrated ultrasonic wave instrumentation, the computer may display an it machine multipurpose each kind of function, in fact is biggest economy. In the past that kind of entire function instrument establishment, the might as well independent ultra acoustimeter, the computer might display respective characteristic fully. The high intellectualization instrumentation only can satisfy the examination condition, the use environment, the duplicated test content and so on the basic situation is same, only then may display its unique function fully. The instrument design also should embark from the actual situation, can satisfy the user the request. In summary, our country ultrasonic wave instrument development and the production, has develops greatly, some models have surpassed the overseas similar instrument超声波检测发展综述高速度，高效率是现代工业的标志，而这是建立在高质量的基础之上的。
