Ultrasonic qhov khuam kom pom kom tau thiab qhov tsis xws luag thev naus laus zis rau kev sib tw
- Yuav ua li cas yog qhov zoo ntawm pased array ultrasonic xeem dhau ultrasonic kuaj rau kev rails?
Phased array ultrasonic kuaj dynames thiab focal ntsiab lus siv cov kev sim ua kom zoo dua li ntawm 85% rau 98%, paub txog 3mm transverse cracks undetected los ntawm kev pom zoo txhais tau tias .
- Yuav ua li cas thiaj li ultrasonic ECHO cov cim qhia qhov txawv ntawm "Quab Qeeb tawg" thiab "suav nrog" hauv kev ntsia?
Fatigue crack echoes are sharp, high-amplitude, and show multiple reflections; inclusion echoes are irregular with lower amplitudes. Analyzing time-domain (pulse width, rise time) and frequency-domain (spectrum distribution) features, combined with ANN algorithms, achieves >90% puas lees paub qhov tseeb . 'ib txoj kev tsheb ciav hlau uas siv cov kev tsheb ciav hlau kom raug 85% ntawm cov kab nrib pleb thiab kev sib tsoo.
- Dab tsi ua rau "qhov muag tsis pom kev" hauv kev sim ultrasonic hauv kev ntsuas ultrasonic yuav ua li cas lawv thiaj li tshem tau?
Cov Zones Qhov Chaw Dag Zog tshwm sim los ntawm thaj chaw ze ntawm kev ua haujlwm thiab kev pib ua5 - 10}}} block probes lossis ncua blocks txo cov chaw dig muag rau cheeb tsam<2mm. A metro line initially missed surface cracks due to blind zones but achieved 100% effective detection after improvements.
- Yuav ua li cas "tsis siv neeg ua kom tsis sib xws
Lub kaw lus siv CNN kom rho tawm cov duab hluav taws xob thiab cov qauv {}} kev ua haujlwm rau cov neeg ua haujlwm txuas ntxiv lossis 92% thiab txo tib neeg kev ua yuam kev los ntawm 80% {{8}
- Txoj kev hloov kho ib puag ncig zoo li cas rau kev sim tshuaj rau Ultrasonic?
In high-temperature (>60 degree) ib puag ncig, siv high-coupling cov neeg sawv cev ({2}}℃{}} degree) thiab kub-dissipating pretnes; Hauv khaub thuas (<-20℃) conditions, apply anti-freeze agents and insulate probes. For humidity, develop waterproof probes and moisture-resistant equipment. A desert railway extended effective testing time from 4 to 8 hours per day with these measures.