대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제37권8호
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  • Pages.1051-1057
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  • 2013
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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불규칙적인 격자망을 이용한 생체 연조직의 곡면변형률 측정

Measurement of Surface Strain on Soft Biological Tissues Using Irregular Grid Pattern

  • 이준식 (강원대학교 대학원 융합시스템공학과) ;
  • 김기홍 (강원대학교 대학원 융합시스템공학과) ;
  • 김형종 (강원대학교 기계의용공학과)
  • Lee, Jun Sik (Dept. of Convergence System Engineering, Graduate School, Kangwon Nat'l Univ.) ;
  • Kim, Ki Hong (Dept. of Convergence System Engineering, Graduate School, Kangwon Nat'l Univ.) ;
  • Kim, Hyung Jong (Dept. of Mechanical and Biomedical Engineering, Kangwon Nat'l Univ.)
  • 투고 : 2013.02.26
  • 심사 : 2013.05.21
  • 발행 : 2013.08.01
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초록

본 연구에서는 광학적 방법으로 곡면변형률을 측정하고자 할 때, 소재 표면이 임의의 곡면이거나 요철이 많은 경우, 부식이나 오염으로 표면이 불량한 경우, 그리고 고무나 폼, 생체 조직 등과 같이 규칙적인 격자망을 인쇄하기 어려운 경우에도 적용할 수 있는 자동 곡면변형률 측정시스템 'ASIAS-bio'를 개발하였다. 이 시스템은 시편의 재질과 표면상태, 격자 패턴과 크기, 격자 마킹 방법, 변형 정도 등 측정 조건에 관계없이 사용이 가능한 것이 특징이다. 우선 그 신뢰성을 평가하기 위하여 금속판재 성형제품의 변형률 분포를 상용 장비로 측정한 결과와 비교하였다. 또한, 돼지 어깨 관절막, 인체 무릎 피부 등 연질 생체 조직의 변형 측정에 적용함으로써 본 시스템의 유용성을 확인하였다.

In this study, an automatic surface-strain measurement system called "ASIAS-bio" has been developed. This system can be used even in cases in which it is very difficult to apply a regular grid pattern necessary for measuring surface-strain, such as curved or uneven surfaces; surfaces damaged by corrosion or contamination; or soft materials such as rubber, foam, and biological tissues. This system works independently of the measurement conditions including the material and its surface condition, grid pattern and size, grid marking method, and degree of deformation. A comparison between the strain distributions of the sheet metal parts measured by using this system and those obtained by a commercial system showed that this system was sufficiently reliable. In addition, the deformation of the swine joint capsule and human knee skin was measured by using this system to demonstrate its usefulness.

키워드

참고문헌

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