elastic pulse 中文意思是什麼
elastic pulse
解釋
彈性脈-
In the calculation, the energy deposited in aluminum by proton beams is first calculated by m - c simulation, then a 1 - d elastic - plastic fluid model is used to simulate the following thermal shock wave process as a result of thermal - mechanical effect by proton irradiation. the shape of proton is taken as a rectangle pulse with a width of 0. 1 microseconds, the energy flux o
對於3mm的鋁材料，入射粒子束為矩形脈沖（脈寬為0 . 1 s ）的情況下，計算得到了電子束、質子束輻照引起鋁材料斷裂的能注量閾值與入射電子束、質子束能量的關系曲線，該曲線存在最小值，分別對應6mev的質子束的34 . 7j cm ~ 2和0 . 35mev電子束的42 . 1j cm ~ 2 。 -
In the process of building and using the mass concrete structures, because of the effect of out - side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance using nondestructive testing method to test the concrete ' s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseases this dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic fem to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, researched the principles of the first - arriving waves " phase when the cracks " depths are not same, obtained the relation between the inversion point and the cracks " depth, which has the direction sense in the application of projects, the second part of this dissertation is ct, which used the ultrasonic wave running through the tested - substance to get arriving - time of the ultrasonic wave, then inverse the image this dissertation drawed one ct program which can well present the different little cells " ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested - substance, ct has the better using foreground.
在混凝土結構的施工及使用過程中，由於受其自身及外界各種因素的影響，常常會產生一些缺陷，對結構物的承載能力和耐久性造成嚴重影響，採用無損檢測技術進行質量檢測和健康診斷，這對混凝土結構開展安全、穩定性評估以及病害隱患治理研究具有重要意義。本論文主要針對大體積混凝土結構缺陷的檢測方法展開研究工作，重點討論了超聲波法檢測混凝土結構裂縫的基本原理和方法及其特點、適用范圍，運用動力有限元數值模擬其檢測過程，探討了有裂縫缺陷的混凝土結構在脈沖荷載作用下彈性波的傳播及其變化特徵，研究了不同裂縫深度下首波相位變化規律，得出了反轉臨界點與裂縫深度之間的關系，這對實際工程應用具有指導意義。聲波ct是一種新的無損檢測技術，它是利用聲波穿透被檢測體獲取聲波接收時間，來進行計算機反演成像的技術。 -
The elastic modulus of a special alloy material are measured by the ultrasonic pulse - echo method, when the temperature is changed from - 20 ~ 60
為實現超聲聲速的快速、精確測量應用數字相關法精確確定超聲信號的傳播時間。 -
Magneto - elastic - plastic dynamic responses and instability of beam - plate excited by magnetic pulse
磁脈沖作用下鐵磁梁式板的磁彈塑性動力響應與失穩 -
When the stationary working current is lower than the critical current of the electromagnetic - elastic system, a numerical program is established to simulate the dynamic responses of the deformation of the current - carrying magnet subjected to a pulse current with rectangular shape
結合其超導載流磁體的實驗結構，給出了超導磁體在不同穩態工作電流（即低於穩態的磁彈性失穩臨界電流）作用下受到矩形脈沖電流作用時的磁彈性動力響應的數值模擬結果。 -
Standard test method for laboratory determination of pulse velocities and ultrasonic elastic constants of rock
實驗室測定巖石的脈沖速度和超聲波彈性常數的標準試驗方法 -
Gaoyuanwen ， zhou you - he ， zheng xiaojing ， 2004 ， magneto - elastic - plastic dynamic characteristic analysis of ferromagnetic beam - plate under the pulse magnetic field ， key engineering material v. 274 276 ： 1131 1136
高原文，周又和， 2006 ，斜磁場作用下鐵磁梁式板的磁場攝動，固體力學學報（出版中）
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