Developing study of detecting method for defective part on concrete structure by using laser vibrometer.

激光测振仪检测混凝土结构缺陷部位方法的研究进展

基本信息

  • 批准号:
    12555162
  • 负责人:
  • 金额:
    $ 6.78万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2000
  • 资助国家:
    日本
  • 起止时间:
    2000 至 2001
  • 项目状态:
    已结题

项目摘要

Vibration techniques were examined for detecting of crack or exfoliation part came put on a concrete structure.At first, some kinds of concrete test block with the groove of depth as 10mm-40mm were made for imitating cracks.Next, two kinds the concrete test block with exfoliation of thickness as 20mm were made. By using these test blocks, many analyzes of vibration response on the all area, especially around defective part, were carried out.As the result of these analyzes, it was found that piezoelectric buzzer device was effective for the excitation of vibration in wide frequency range.It was also found that laser vibrometer was useful for the observation of vibration, because it made easy positional moving and it had sensitivity in very high frequency range.As for detecting of parts of exfoliation, detecting was easy, because there was strong vibration response on such area compared with the sound part in the audio frequency range. As for detecting of crack, the amplitude of vibration response became weak over the groove in the supersonic frequency range. More than 20mm depth of the groove, phase delay in the supersonic frequency range appeared large changes as several ten thousand degrees between both sides of the test groove.For the practical detecting technique, pressing down type to the test surface and movable type device for vibration excitation is useful, and dual channel receiving technique for vibration by laser vibrometer was effective to obtain stable analyzed results.These techniques were also confirmed to the actual wall surface, and then effective results could be obtained for detection of the crack.By only these analyzing techniques in this stage, quantity of the crack depth could not be recognized clearly. So, another sound resonance method tried. Then, prospect of the quantitative detection of crack could be seen.
为了检测混凝土结构出现的裂缝或剥落部位,首先制作了10 mm ~ 40 mm深度的混凝土试块模拟裂缝,然后制作了2种厚度为20 mm的混凝土剥落试块,并对试验结果进行了分析。利用这些试块,对整个区域,特别是缺陷部位周围的振动响应进行了多次分析,结果发现,压电蜂鸣器装置在宽频率范围内激励振动是有效的,激光测振仪在振动观测方面也是有用的,对于剥离部分的检测,由于在音频范围内与声音部分相比,在该区域上存在强烈的振动响应,因此检测是容易的。对于裂纹的检测,在超声频率范围内,振动响应的幅值在槽的上方变得很弱。槽深超过20 mm时,测试槽两侧的相位延迟在超声频率范围内出现了数万度的大变化。对于实际检测技术而言,对测试面采用下压式加移动式激振装置是有用的,激光测振仪的双通道振动接收技术是获得稳定分析结果的有效方法,实际墙体表面的裂缝深度,从而得到有效的裂缝检测结果,但仅依靠这一阶段的分析技术,还不能清楚地识别裂缝深度的数量。于是,又尝试了另一种声音共鸣的方法。展望了裂纹定量检测的前景。

项目成果

期刊论文数量(42)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
岩瀬昭雄: "コンクリート構築物の欠陥部周辺の振動伝搬特性-位相変化に着目した診断計測法について-"日本音響学会秋期研究発表会講演論文集. II. 637-638 (2000)
Akio Iwase:“混凝土结构缺陷周围的振动传播特性 - 关注相变的诊断测量方法 -”日本声学学会秋季研究会议记录 II 637-638。
  • DOI:
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    0
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Teruo IWASE, Yutaka Mahide, Tukasa Abe and Mareyasu Doi: ""Vibration propagation characteristics around defective part on concrete structure -Experiments on diagnosis based on phase delay in vibration response-""Acoustical Science and Technology. Vol. 22,
Teruo IWASE、Yutaka Mahide、Tukasa Abe 和 Mareyasu Doi:“混凝土结构缺陷部分周围的振动传播特性 - 基于振动响应相位延迟的诊断实验 -”“声学科学与技术”。
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    0
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  • 通讯作者:
岩瀬昭雄, 小林弘樹, 安岡博人: "レザー振動計によるコンクリート構築物の欠陥部の非破壊検査法について-移動型加振法による実用化の検討-"日本音響学会騒音振動研究会 資料. N2202-2. 1-8 (2002)
Akio Iwase、Hiroki Kobayashi、Hiroto Yasuoka:“使用激光振动计对混凝土结构缺陷部分进行无损检测方法 - 使用移动激励方法的实际应用的考虑 -”日本声学学会噪音和振动研究组材料 N2202-2。 1-8(2002)
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
KOBAYAHl Hiroki, and IWASE Teruo: ""Non-destructive detection method for clacks on concrete structure by using movable vibration exciter""Proc. Annual Meeting of Architectural Institute of Jpn.. 295-296 (2001)
KOBAYAHl Hiroki、IWASE Teruo:“利用可移动激振器对混凝土结构裂缝进行无损检测方法”Proc.
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    0
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IWASE Teruo其他文献

IWASE Teruo的其他文献

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{{ truncateString('IWASE Teruo', 18)}}的其他基金

Practical deveropping study on low frequency sound absorption by preforated plate sturucture
穿孔板结构低频吸声实用化研究
  • 批准号:
    25420606
  • 财政年份:
    2013
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Study on Verification of sound refraction in porous material and investigation of insertion effect of porous material into light double leaf wall
多孔材料声折射验证研究及多孔材料插入轻质双叶壁效果研究
  • 批准号:
    22656122
  • 财政年份:
    2010
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Study on acoustical diagnosis on soundness of porous drainage pavement surface
多孔排水路面健全性声学诊断研究
  • 批准号:
    19360258
  • 财政年份:
    2007
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study of establishment of measurement method of acoustic particle velocity and its applications to advanced investigation on acoustical phenomena
声质点速度测量方法的建立及其在声学现象高级研究中的应用研究
  • 批准号:
    17360283
  • 财政年份:
    2005
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on developing of test method for sound insulation characteristics of light leaf double wall and its applications to realize highly efficient wall structures.
轻质双墙隔声特性测试方法开发及其应用以实现高效墙体结构的研究
  • 批准号:
    15360309
  • 财政年份:
    2003
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on investigation of sound propagation on snow field and study on improvement method of sound information addressing
雪场声音传播研究及声音信息寻址改进方法研究
  • 批准号:
    09450216
  • 财政年份:
    1997
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
DEVELOPING STUDY ON EVALUATION METHODS OF SOUND INSULATION CHARACTERISTICS OF PLATES USING SMALL AREA MATERIALS AND TRANSFER FUNCTION ANALYSIS
小面积材料板材隔声特性评价方法及传递函数分析的开展研究
  • 批准号:
    08555144
  • 财政年份:
    1996
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development Research on Measuring Method of sound propagation Constants of Porous Materials.
多孔材料声传播常数测量方法的开发研究。
  • 批准号:
    06555172
  • 财政年份:
    1994
  • 资助金额:
    $ 6.78万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)

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基于磁致伸缩驱动的弹性波输入系统对混凝土表面质量和混凝土内部缺陷的创新无损诊断方法
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开发利用毫米波和太赫兹波的文物无损诊断技术
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