초음파진단
카메라 (적용분야)------------
초음파는 가청주파수(20Hz~20kHz)를 상위하는 파동(종파)으로서 투과성질이 있고 에너지를 집적할 수 있는 장점이 있다. 진동과 소음은 매질인 고체와 공기를 비교하는 것으로 쉽게 구분할 수 있지만 진동과 초음파는 매질의 차이가 아니므로
주파수라는 개념을 알고 있어야 한다. 진동의 실용적 활용 주파수는
0~20,000Hz정도이며 소음은 16~8,000Hz인 반면에 초음파는 2kHz~100kHz를 의미한다. 물론 그 이상은 전파(mHz)영역이다. 이 것을 듣기도 하고 눈으로 볼 수 있는 방법이 있다.
초음파의 설비진단에의 적용
초음파진단카메라 (Leak shooter)의 적용분야는 무궁무진하며 자동차 예방보전, 예지보전, QC(preventative, predictive
maintenance and quality control)가 실행되는 산업분야는 모두 적용이 가능하다. 또한 아래와 같은 분야도 가장 많이 활용되며 큰 효과를 보고 있는 산업분야라 할 수 있다.
Automotive and transportation (자동차산업, 물류산업)
Wind noise(바람에 의한 소음),
water leaks (누수,방수; windshield,
tightness), bearings (로봇 베어링;including bearings on
robots). Leaks on air brake systems(공기브레이크시스템의 누설).
Aviation and space (항공, 우주산업)
Cabin pressure leaks, cockpit windows, oxygen
system leaks, fuel cells, actuators, tire retention, hydraulic valves(유압밸브), hot air duct leaks, slides and rafts, nitrogen system and
pneumatic system leaks(질소 및 뉴메틱시스템 누설, bearings.
Trucks and buses (트럭, 버스)
Wind noise, water leaks, air brakes, injector
sequence(분사제어장치), wheel bearings (slow speed).
Rubber and tire (고무 및 타이어)
Leak detection; steam traps, valves, bearing
monitoring, electrical gear (tracking), pumps, motors.
Railroads (철도)
Air brakes, bearings, water leaks, electrical gear,
and diesel injector's sequence.
Chemical and petrochemical (화학, 정유석유화학)
Pressure/vacuum leaks(압력/진공
누설), bearing monitoring(베어링 상태감시),
steam traps(스팀트랩), valves, compressors, heat
exchangers(열교환기), gear/gear boxes, pumps (공동현상;including cavitation), motors, electrical gear (arcing).
Construction/Contracting vehicles & cranes (건설. 건설기계 및 크레인)
Pump cavitations; valve leaks, air in-leakage
around fittings, tire retention, bearings, gears.
General manufacturing (일반제조)
Bearings, valves, steam traps, compressors, heat
exchangers, pneumatic systems, pressure/vacuum leaks, gear/gear boxes, electric
arc/corona/tracking in electrical gear.
Gas plants (가스플랜트산업)
Compressor valve analysis(압축기 밸브분석), leak detection(누설감지), valves, bearing
monitoring.
Facilities and buildings (시설, 빌딩시설)
Bearings, air handlers(공기조작기), pumps, motors, compressors, pressure leaks, steam traps, valve,
chillers(냉각기), transformers(변압기),
circuit breakers, relays, leaks in building envelope i.e. air infiltration(냉동공조,공기순환), water leaks(누수).
Marine (조선)
Water tightness integrity tests(탱크누수), hatches(해치커버), bulkheads, pneumatic
system leaks, valves, heat exchangers(열교환기), steam
traps, diesel injector timing(디젤연료분사), condensers,
bearing monitoring, refrigeration leaks(냉각누설), pumps,
compressors, electrical gear (arcing), air distribution boxes (Manifold).
Materials and composites (재료 및 주조)
Vacuum, autoclaves, bearings on pumps.
Pulp and paper (펄프 및 제지산업)
Steam traps, valves, bearing monitoring (저속베어링상태감시;including slow speed), heat exchangers, pressure/vacuum leaks, and
electrical gear.
Power plants (전력산업) (발전기,변전기;generation/distribution)
Condenser in-leakage(컨덴서 누전),
heat exchangers, steam traps, valves, boilers, bearing monitoring, pumps,
turbines(터빈), arcing and corona in electrical gear(코로나).
Textiles (섬유산업)
Bearings, valves, pressure/vacuum leaks, steam
traps.
Food processing (식품)
Steam traps, valves, heat exchangers, bearings,
pumps, motors, pressure/vacuum leaks, electrical gear, air distribution boxes
(Manifold).
Water waste treatment (상하수도)
Bearings, valves, pressure leaks, gearboxes.
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