벤더 엘리멘트를 이용한 토목재료의 강성측정에 대한 적용성 연구

Title
벤더 엘리멘트를 이용한 토목재료의 강성측정에 대한 적용성 연구
Alternative Title
A Pilot Study of Bender Elements in Stiffness Measurements of Civil Engineering Materials
Author(s)
목영진; 정재우; 장인성
KIOST Author(s)
Jang, In Sung(장인성)
Publication Year
2005-03-25
Abstract
Piezo-ceramics are special materials which transform energy between mechanical and electrical forms. Bender-elements are composite materials consisting of thin piezo-ceramics and elastic shims, and are widely used as actuators and transducers in the field of electronics, robotics, autos and mechatronics utilizing the effectiveness of energy transformation capability. In geotechnical engineering, commercial bender-elements are used in laboratory as source and receiver in the measurements of soil stiffness. The elements were built by using various metal shims sandwiched between piezo-ceramics and coating over the composite in the research. A pair of elements were buried in a concrete block and used as source and receiver to measure the stiffness of the concrete. The test results were verified by comparing with the resonant column testing results. In a preliminary stage of the development of an in-situ seismic testing equipment using bender-elements for soft clay materials, shear waves were generated and measured by burying the elements in the barrel of kaolinite and water mixture. The measured shear wave signals were so distinct for the first-arrival pick that applicability of the elements in the field measurements is very promising.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41225
Bibliographic Citation
대한지반공학회 봄학술발표회, pp.308 - 319, 2005
Publisher
대한지반공학회
Type
Conference
Language
Korean
Publisher
대한지반공학회
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