...验室 关键词： 无损检测，振动法，弹性模量，应力分等 [gap=956]Key words: Non Destructive Testing, The Method of Vibration, Wood Modulus of Elasticity MOE, Stress Grading ..
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In the paper, sound wood, wood with knots and wood with round holes are tested through transverse vibration method, which will acquire natural frequency, and then dynamic modulus of elasticity can be figured out.
本论文分别对无缺陷木材、有节木材和有孔洞木材进行横向振动试验,得出其固有频率并计算出动态弹性模量,以期从横向振动法入手分析得出木材的力学性质,并找出木材的力学性质与缺陷的影响关系;同时对木材的振动信号进行分析处理,初步研究木材的缺陷检测方法。
参考来源 - 基于振动法进行木材应力分等和缺陷检测的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
采用三维有限元随机振动法对洞坪拱坝泄洪诱发振动进行了较为深入的研究。
In this paper, vibration induced by flood release of Dongping Arch Dam is studied fully by a three-dimensional finite-element random vibration method.
按照振动驱动机制不同，节段模型试验方法可分为自由振动法和强迫振动法两大类。
According to different driving ways of vibration, the sectional model test methods can be classified into two major categories, i. e. free-vibration method and forced-vibration method.
针对油层近井底地带堵塞、严重影响油井产量的问题，研发了水力振动法处理油层技术。
The hydraulic vibration oil layer treatment method is researched, because the bridging near hole bot-orn in the oil layers seriously affects the oil production.
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