기계·로봇 연구정보센터

서울과학기술대학교 비파괴평가연구실

실험실 정보안내
지도교수	박익근
전공분류	파괴역학(Fracture Mechanics),
주소	서울 노원구 공릉로 232 서울과학기술대학교
전화	02-970-6332
홈페이지	http://snde.net/frontpage.asp?catalogid=sndt&language=ko

실험실소개

연구분야

1. Engineering Nanostructure Characterization

1) Ultrasonic AFM(UAFM) Technique

Study on the optimal frequency and amplitude with the types of nano-scale defects
Implementation of the system for nano-scale fine defect by the Ultrasonic AFM system on surface layer
Comparison the mutual results of SEM, SAM, and Ultrasonic AFM
Performance improvement of the UAFM signal and image processing algorithm

2) Scanning Acoustic Microscopic Technique

Modeling and simulation of ultrasonic wave propagation using Point/Line Focusing with Scanning Acoustic Microscopy(SAM)
Experimental study of Residual stress measurement of SAW velocity by V(z) curve with SAM

3) Hybrid Acoustic Imaging(HAI) Technique

Quantitative NDE of adhesion strength in the nano-scaled thin film system
Analysis and evaluation of dynamic behaviors of adhesion strength by measuring SAW velocity using the HAI system based on Point/Line Focusing techniques under dynamic stress
Comparative verification of evaluation results of for adhesion strength at interface using the Nano-Scratch and HAI technique
Quantitative NDE of elasticity and adhesion strength at interface

4) Nonlinear Acoustic Effects Technique

Development of Nonlinear Ultrasonic Technology for Evaluation of Closed Crack and Micro Degradation in NPP Piping System

2.Structural

1) Guided Wave Testing(GWT) Technique

Development of ultrasonic GWT Technique for power plant components
Application Technique of Heat Exchanger Tube by GWT

2) Noncontact Ultrasonic NDE Technique

Lamb-EMAT(Electromagnetic Acoustic Transducer;EMAT)
SH-EMAT
ACT(Air-Coupled Transducer; ACT)
Development of Ultrasonic Transducer for SHM Using the Magnetostrictive Effect

3.Reliability and Failure Mechanism

1) Statistical Reliability Assessment of Ultrasonic NDE

Probability of Detection(POD)

Round Robin Test

Monte Carlo Simulation

연구성과

Chiaki Miyasaka, I. K. Park, T. S. Park
Nondestructive evaluation of nanostructured thin film system using scanning acoustic microscopy
J. of KSNT, 2010, Vol. 30, No. 5, pp. 437~ 443

Chung Seok Kim, I. K. Park, K. Y. Jhang, C. Miyasaka
Determination of elastic modulus of equal-channel-angular-pressed Aluminum 5052 alloy by acoustic material signature
J. of KSNT, 2010, Vol. 30, No. 2, pp. 146~ 154

Yong Kwon Kim, I. K. Park
Evaluation of Thickness Reduction in an Aluminum Sheet using SH-EMAT
J. of KWJS, 2010, Vol. 28, No. 2, pp. 74~ 78

Ik Keun Park, Y. K. Kim
Mode characteristics analysis of the SH-EMAT waves for evaluating the thickness reduction
J. of KSMTE, 2010, Vol. 19, No. 2, pp. 198~ 203

Jin Hyuk Lee, S. J. Lim, I. K. Park, D. H. Kim
Development of automated ultrasonic testing system for partial joint-weld of heat exchanger’s header to tube in power plant
J. of KSNT, 2010, Vol. 30, No. 4, pp. 367~ 372

프로젝트

[자왜효과를 이용한 구조건전성평가용 비접촉 초음파 장치(Ultrasonic Transducer for Structure Health Monitoring by Using the Magnetostrictive Effect)]

[초음파 원자현미경장치(Ultrasonic Atomic Force Microscopy)] 특허출원중