公开(公告)号：KR101289253B1

公开(公告)日：2013-07-24

申请号：KR1020120006709

申请日：2012-01-20

Applicant: 한국과학기술원

Inventor： 손훈 ,  이현석 ,  양진열

IPC: G01N29/04 ,  G01B17/04

CPC classification number: G01N21/1702 ,  G01M3/38 ,  G01N29/04 ,  G01N29/041 ,  G01N29/2418 ,  G01N29/34 ,  G01N2021/1706 ,  G01N2201/067 ,  G01N2201/08 ,  G01N2291/0289 ,  G01N2291/2634

Abstract: PURPOSE: A device and a method for sensing damage to a pipe are provided to precisely sense the heated pipe utilized for a nuclear power facility or a chemical plant facility. CONSTITUTION: A device (1) for sensing damage to a pipe includes an ultrasonic wave supply unit (10), an ultrasonic wave receiving unit (20), and an analysis unit (30). The ultrasonic wave supply unit generates ultrasonic signals to the pipe. The ultrasonic wave receiving unit receives the ultrasonic signals of the pipe. The analysis unit analyzes the ultrasonic signals received by the ultrasonic wave receiving unit, thereby determining whether the pipe is damaged or not. The ultrasonic wave supplying unit includes a generating unit (11), a supplying unit (12), and an excitation unit (13). The generating unit generates laser beams. The excitation unit includes an excitation pipe, an excitation lens, an excitation plate, and an excitation strip. [Reference numerals] (11) Generating unit; (13) Excitation unit; (21) Light source unit; (23) Sensing unit; (24) Receiving unit; (30) Analysis unit

Abstract translation: 目的：提供一种用于检测管道损坏的装置和方法，用于精确检测用于核电设施或化工厂设备的加热管道。 构成：用于感测管道损坏的装置（1）包括超声波供给单元（10），超声波接收单元（20）和分析单元（30）。 超声波供给部向管道生成超声波信号。 超声波接收单元接收管道的超声波信号。 分析单元分析由超声波接收单元接收的超声波信号，从而确定管道是否损坏。 超声波供给单元包括发电单元（11），供给单元（12）和励磁单元（13）。 发电机组产生激光束。 激励单元包括激励管，激发透镜，激励板和激励条。 （附图标记）（11）发电机组; （13）励磁机组; （21）光源单元; （23）感应单元; （24）接收单位; （30）分析单位

公开(公告)号：KR1020120080095A

公开(公告)日：2012-07-16

申请号：KR1020110001554

申请日：2011-01-06

Applicant: 한국과학기술원

Inventor： 손훈 ,  안윤규

IPC: G01B7/16 ,  G01B17/04

Abstract: PURPOSE: A method for sensing damages based on an impedance-guided wave and an impedance-guided wave integration measuring device are provided to efficiently sense a damage of a structure regardless of an environmental change and efficiently measure the impedance and guided waves of a piezoelectric. CONSTITUTION: A method for sensing damages of a structure is as follows. First admittance data is obtained by measuring the admittance of a piezoelectric attached on a structure is obtained in an initial state of a structure(S12). The first admittance is divided into an active portion depending on an interaction of between the piezoelectric and structure and a passive portion depending on natural properties of a first piezoelectric(S20). Second admittance data is obtained by measuring the admittance of the piezoelectric is obtained in an arbitrary state of the structure(S32). The second admittance is divided into an active portion depending on an interaction of between the piezoelectric and structure and a passive portion depending on natural properties of a first piezoelectric(S40). The active portions of the first admittance and second admittance are compared(S54).

Abstract translation: 目的：提供一种用于感测基于阻抗导波的损伤的方法和阻抗导向波积分测量装置，以有效地感测结构的损害，而不管环境变化如何，并且有效地测量压电体的阻抗和导波。 构成：用于检测结构损坏的方法如下。 通过测量在结构的初始状态下获得附着在结构上的压电体的导纳获得第一导纳数据（S12）。 根据第一压电体的自然特性，第一导纳根据压电体和结构体之间的相互作用被分为有源部分和被动部分（S20）。 通过测量在结构的任意状态下获得压电体的导纳来获得第二导纳数据（S32）。 根据第一压电体的自然特性，第二导纳根据压电体和结构体之间的相互作用被分为有源部分和被动部分（S40）。 比较第一导纳和第二导纳的有效部分（S54）。

公开(公告)号：KR101094906B1

公开(公告)日：2011-12-15

申请号：KR1020090057721

申请日：2009-06-26

Applicant: 한국과학기술원

Inventor： 손훈 ,  안윤규

IPC: G01N22/02 ,  G01M7/02

Abstract: 본 발명은, 전체적으로 일정한 두께를 가지는 판부재에 형성되며, 상기 판부재의 두께가 부분적으로 변경되는 형태의 손상부를 감지하기 위한 손상감지방법에 있어서, 상기 판부재의 일측면과 타측면에 제1압전센서와 제2압전센서가 서로 대응되도록 설치된 상태에서, 상기 제1압전센서와 제2압전센서를 가진시켜, 상기 판부재를 통해 전파되어지는 S모드 및 A모드의 램(Lamb)파를 발생시키는 가진단계와, 상기 제1압전센서와 제2압전센서에 의해서 발생된 상기 램파가 되돌아오는 것을 제1압전센서와 제2압전센서로 계측하기 위한 계측단계와, 상기 제1 및 제2압전센서로 계측된 계측신호로부터, 상기 램파에서 모드변이가 발생하였는지를 파악하여, 그 모드변이의 발생여부에 따라 상기 손상부의 유무를 판정하는 손상판정단계를 구비하는 것을 특징으로 한다.
압전센서, 램파, 모드변이, 손상감지방법

公开(公告)号：KR1020110123379A

公开(公告)日：2011-11-15

申请号：KR1020100042822

申请日：2010-05-07

Applicant: 한국과학기술원

Inventor： 손훈 ,  이현석 ,  박현준

IPC: G01B11/16 ,  G01M7/02 ,  G01B17/04 ,  G01N29/04

Abstract: PURPOSE: A laser system for a nondestructive test is provided to improve the reliability of a nondestructive test by preventing the signal distortion of a vibrating unit and a sensing unit. CONSTITUTION: A laser system for a nondestructive test comprises a vibrating unit(110) which is attached to a structure and gives vibration, a sensing unit(120) which is attached to the structure and detects the vibration, a laser generating unit which generates a laser signal, a vibration cable unit(140) which is connected to the laser generating unit and the vibrating unit, a sensing cable unit(150) which is connected to the vibration cable unit and the sensing unit, and a data processing unit(160) which is connected to the sensing cable unit and collects data.

Abstract translation: 目的：提供一种用于非破坏性测试的激光系统，以通过防止振动单元和感测单元的信号失真来提高非破坏性测试的可靠性。 构成：用于非破坏性试验的激光系统包括附接到结构并产生振动的振动单元（110），附接到结构并检测振动的感测单元（120）;激光产生单元，其产生 激光信号，连接到激光产生单元和振动单元的振动电缆单元（140），连接到振动电缆单元和感测单元的感测电缆单元（150），以及数据处理单元（160 ），其连接到感测电缆单元并收集数据。