메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국수처리학회 한국수처리학회지 한국수처리학회지 제21권 제4호
발행연도
2013.1
수록면
61 - 70 (10page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

이 논문의 연구 히스토리 (3)

초록· 키워드

오류제보하기
Characteristics of leak noise frequency was built through comparison analysis of collected acoustic signals from pipeline before and after leakage. Leakage was identified at 10 points, acoustic signals were collected at 14 water supply facilities(manhole, water valve, stop valve). Investigation time was set up from 11 PM to 5 AM in order to minimize effect of white noise caused by water usage, vehicle traffic, etc. Comparing results from characteristics of acoustic signals before and after leakage showed that signal strength became weaker after repaired pipeline from the full range of frequency bands, except for some uncertain data that include heavy noise. Frequency bands indicating strong signal strength were from 200 to 2,000 ㎐, with or without leakage. As a result of analysis based on pipe material, leakage-related frequency bands were identified from 300 to 2,000 ㎐ in case of galvanized steel pipe. On the other hand, frequency bands were related less than 1,200 ㎐ if leak occurred in stainless steel pipe. Frequency analysis result according to leak point, leak noise were related from 500 to 2,000 ㎐ in case of a leak in a straight pipe, frequency bands of leak noise in joints and junction had relevance to the range of 300 to 1,200 ㎐.

목차

등록된 정보가 없습니다.

참고문헌 (15)

참고문헌 신청

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0