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artificial crack中文是什么意思

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  • This paper is taking model seismology theory as guidance , regards ultrasonic experimental method as major research means , and has made artificial crack and pore model according to physical model similar principle with various materials
    本文以模型地震學(xué)理論為指導(dǎo),把超聲波實(shí)驗(yàn)方法作為主要的研究手段,根據(jù)物理模型相似性原理,用多種材料制作了人工裂縫模型和孔洞模型。
  • Along with increase of pressure , the parameters such as velocity , amplitude , main frequency and quality factor of seismic wave change big gradually , while change very weakly with the change of temperature . through testing research for artificial crack and pore model , we conclude that crack density , azimuth , opening and the change of pore have obvious influences on speed , amplitude , attenuation ( or quality factor ) and main frequency of seismic wave etc . but , seismic wave dynamic characteristics are more evident than its kinematical characteristics for the change of crack and pore parameters . therefore , it offers reliable experiment foundation for detecting crack and pore by seismic wave kinematical characteristics ( such as amplitude , attenuation and main frequency etc . )
    通過(guò)對(duì)人工裂縫和孔洞模型的超聲波實(shí)驗(yàn)研究,可以認(rèn)為:裂縫密度、方位、張開(kāi)度和孔洞密度的變化對(duì)縱橫波的速度、振幅、衰減(或品質(zhì)因子q )和主頻率等參數(shù)均有明顯的影響,但裂隙參數(shù)的變化對(duì)地震波動(dòng)力學(xué)特征參數(shù)(振幅、衰減、主頻率等)的影響遠(yuǎn)遠(yuǎn)大于對(duì)運(yùn)動(dòng)學(xué)特征參數(shù)(速度等)的影響,這為利用地震波的振幅、衰減和主頻率等屬性參數(shù)進(jìn)行裂縫和孔洞特征的檢測(cè)提供了可靠的實(shí)驗(yàn)基礎(chǔ)。
  • 5 experimental study about the influence that is resulted from the artificial crack flaw on the propagation of longitudinal stress wave in pipeline has been done . experimental result make us know that the signal collected can reflect the defect " s influence which will provide the important basic for the next analysis in this paper
    5 、利用實(shí)驗(yàn)研究了人工裂紋缺陷對(duì)管道中波傳播特性的影響,通過(guò)對(duì)比,用實(shí)驗(yàn)證實(shí)了這種影響確實(shí)存在,為本文進(jìn)一步對(duì)缺陷的識(shí)別和定位提供了重要的基礎(chǔ)。
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