[특허]Ultrasonic testing device for inspecting thermit rail welds

Ultrasonic testing device for inspecting thermit rail welds 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-029/04
출원번호	US-0496310 (1974-08-09)
발명자 / 주소	Vezina Georges E. (Laval-des-Rapides CA)
출원인 / 주소	Canac Consultants Limited (Montreal CA 03)
인용정보	피인용 횟수 : 26 인용 특허 : 0

초록 ▼

An ultrasonic testing device for inspecting thermit rail welds in a track is disclosed. The device may be passed over the top of a rail weld in a track to indicate whether there are any faults in the weld. The device includes a longitudinal shoe which may be placed lengthwise along the top surface of the rail, a transmitter which transmits an ultrasonic energy pulse and a receiver for receiving the ultrasonic energy pulse, the transmitter and receiver being positioned and aimed so that an energy pulse is directed downwards towards a location on the under surface of the rail and reflects upwards as an echo pulse so that it is received by the receiver. The indication of the transmittal and receival of the pulse is shown on a cathode ray tube or multi-channel pen recorder. A method of inspecting the thermit rail weld is also disclosed. This includes the transmission of a pulse at an angle of at least 45°through the weld and receiving an echo of this pulse which has been reflected off the bottom surface of the rail.

대표청구항 ▼

Ultrasonic testing device for inspecting thermit rail welds in a track comprising a longitudinal shoe adapted to be placed lengthwise along the top surface of a rail; a first means for transmitting an ultrasonic energy pulse in a downwards path towards a location on the under surface of the rail; a first means for receiving an ultrasonic energy pulse and for receiving an echo of the transmitted pulse reflecting from the location on the under surface of the rail, said first transmitting means and said first receiving means being spaced a predetermined distance apart along said shoe and said location on the under surface of the rail being below the midpoint between said first transmitting means and said receiving means said first transmitting and receiving means for detecting porosity and a lack of fusion in the rail weld; a central transducer means positioned midway between said first transmitting means and said first receiving means for transmitting and receiving an ultrasonic energy pulse in and from a vertically downward direction, respectively for detecting the location of a rail weld; a plurality of second transmitting means located between said first transmitting means and said central transducer means for transmitting and directing an ultrasonic energy pulse at an acute angle to the top surface of the rail to cover the height of a rail directly under said central transducer means; a plurality of second receiving means for receiving ultrasonic energy pulses corresponding and equal in number to said second transmitting means and located between said central transducer means and said first receiving means, each second receiving means having a combination of spacing from the other said second receiving means, of spacing from said corresponding transmitting means, and of rEceiving an ultrasonic energy pulse at predetermined angles such that the pulses that are received are those pulses transmitted by said corresponding transmitting means which have been reflected by an area of porosity located substantially under said central transducer means, said corresponding pairs of second transmitting and receiving means for detecting porosity of the weld and the height in the rail of any determined areas of porosity; and means for indicating the transmission of each pulse, the receiving of the echos of the respective pulses, and the time interval for the pulses to pass downward through the rail and the echos of the respective pulses to pass upward through the rail.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Ultrasonic testing device for inspecting thermit rail welds 원문보기

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Ultrasonic testing device for inspecting thermit rail welds 원문보기

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