Case Studies in Nondestructive Testing and Evaluation最新文献_第3页

Approach to identify misaligned dowel and tie bars in concrete pavements using ground penetrating radar 利用探地雷达识别混凝土路面定位杆和拉杆错位的方法

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-10-01 DOI: 10.1016/j.csndt.2014.06.001

Cherif Amer-Yahia Ph.D., P.E. , Todd Majidzadeh

引用次数: 12

Serviceability assessment of the Góis footbridge using vibration monitoring 利用振动监测对Góis人行桥的可用性进行评估

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-10-01 DOI: 10.1016/j.csndt.2014.10.001

Rolando Salgado , Jorge M. Branco , Paulo J.S. Cruz , Gustavo Ayala

引用次数: 18

Low frequency and boundary condition effects on impedance based damage identification 低频和边界条件对阻抗损伤识别的影响

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-10-01 DOI: 10.1016/j.csndt.2014.05.001

C. Bharathi Priya , A. Likhith Reddy , G.V. Rama Rao , N. Gopalakrishnan , A. Rama Mohan Rao

引用次数: 19

Deconvolution processing for improved acoustic wavefield imaging 改进声波场成像的反卷积处理

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-10-01 DOI: 10.1016/j.csndt.2014.10.002

Christian Kexel, Jochen Moll

引用次数: 4

Structural monitoring using fiber optic sensors of a pre-stressed concrete viaduct during construction phases 预应力混凝土高架桥施工阶段光纤传感器结构监测

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-10-01 DOI: 10.1016/j.csndt.2014.06.002

Giuseppina Uva , Francesco Porco , Andrea Fiore , Giacinto Porco

引用次数: 37

Wire failure prediction for a rotary beam fatigue tester 旋转梁疲劳试验机钢丝失效预测

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-10-01 DOI: 10.1016/j.csndt.2014.04.001

Elizabeth Thompson , Rahul Basu , Timothy Loos

引用次数: 3

Nondestructive evaluation of material degradation and sub-millimeter sized defect detection in steel using magnetic measurements 材料退化的无损评价和亚毫米级钢的磁检测缺陷

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-04-01 DOI: 10.1016/j.csndt.2014.01.001

H. Kikuchi , I. Shimizu , K. Sato , K. Iwata

引用次数: 8

Signature frequencies for buried soil anchors 埋地土锚的信号频率

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-04-01 DOI: 10.1016/j.csndt.2014.03.001

James F. Wilson

引用次数: 0

Study on the subsurface damage depth in machined silicon wafers by the laser-ultrasonic method 激光超声法对加工硅片亚表面损伤深度的研究

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-04-01 DOI: 10.1016/j.csndt.2014.03.002

A.A. Karabutov , N.B. Podymova

{"title":"Study on the subsurface damage depth in machined silicon wafers by the laser-ultrasonic method","authors":"A.A. Karabutov , N.B. Podymova","doi":"10.1016/j.csndt.2014.03.002","DOIUrl":"10.1016/j.csndt.2014.03.002","url":null,"abstract":"<div><p>This work aims at applying the laser-ultrasonic method for nondestructive evaluation of the depth of the subsurface damage in machined silicon wafers. It is based on different mechanisms of laser excitation of ultrasound by absorption of Q-switched Nd:YAG laser pulses at the fundamental wavelength: the concentration–deformation mechanism in the single-crystalline silicon and the thermoelastic one in the damaged layer. Due to the uniform heating of the whole damaged layer during the laser pulse action the amplitude of the compression phase of the laser-induced ultrasonic signal is proportional to the damaged depth. The rarefaction phase of this signal arises by absorption of the rest of laser energy in the single-crystalline silicon beneath the damaged layer. The empirical relation between the depth of the subsurface damage and the ratio of the amplitudes of compression and rarefaction phases of the laser-induced ultrasonic signal can be fitted by a linear function within the depth variation and the corresponding spread of the signal amplitudes. This relation can be used for in situ quantitative nondestructive evaluation of the depth of the subsurface damage in machined silicon wafers; the minimal reliably detectable depth is estimated at the level of 0.15–0.2 μm.</p></div>","PeriodicalId":100221,"journal":{"name":"Case Studies in Nondestructive Testing and Evaluation","volume":"1 ","pages":"Pages 7-12"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csndt.2014.03.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89188005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Monitoring structural deterioration of railway turnout systems via dynamic wheel/rail interaction 通过轮轨动态相互作用监测铁路道岔系统结构劣化

Case Studies in Nondestructive Testing and Evaluation Pub Date : 2014-04-01 DOI: 10.1016/j.csndt.2014.03.004

Sakdirat Kaewunruen

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引用次数: 98