Thickness Measurement Method ntawm Ultrasonic Scanning Microscope
Yuav ua li cas Ultrasonic Scanning Microscopes Ua Haujlwm
Daim duab thaiv ntawm ultrasonic scanning microscope system yog qhia. Ultrasonic transmitter receiver generates ultrasonic pulses ntawm ib tug ntau zaus (5 MHz rau 2 GHz), thiab ncav cuag tus qauv los ntawm qhov nruab nrab coupling (xws li dej deionized, cawv, thiab lwm yam). Txij li thaum kis tau tus mob ntawm ultrasonic zog yuav tsum tau qhov nruab nrab yuav tsum tsis tu ncua, discontinuous interfaces xws li pores, impurities, delaminations, tawg, thiab lwm yam. yuav cuam tshuam nrog propagation ntawm ultrasonic signals los yog ua rau reflections ntawm ultrasonic signals. Thaum lub teeb liab ultrasonic dhau los ntawm cov qauv, vim qhov sib txawv ntawm acoustic impedance ntawm cov ntaub ntawv sib txawv, cov nthwv dej yuav tshwm sim ntawm qhov sib cuam tshuam nrog qhov tsis zoo lossis kev sib txuas tsis zoo. Qhov cuam tshuam ncha teeb liab tau txais los ntawm ultrasonic transducer yog xa mus rau A / D cov ntaub ntawv tau txais daim npav los ntawm ultrasonic transmitter receiver, thiab cov teeb liab ncha tau ua tiav thiab tso tawm rau ntawm lub vijtsam hauv daim ntawv waveform. Cov duab sab hauv ntawm lub cuab yeej sib raug rau lub waveform kuj tuaj yeem tshwm sim ntawm kev ua haujlwm interface. Peb-axis tsab ntawv tsa suab yog nqa lub ultrasonic transducer scan lub cuab yeej nyob rau hauv kev sim ntawm kev kub ceev, thiab thaum kawg tau ib tug high-resolution ultrasonic duab ntawm tus coj interface.
Lub hauv paus ntsiab lus ntawm Ultrasonic Thickness Measurement
Qhov zaus ntawm ultrasonic tsis yog siab, qhov ncaj qha yog qhov zoo, thiab qhov ceev ntawm lub suab nyob rau hauv ib homogeneous nruab nrab yog tib yam. Thaum lub ultrasonic pulse generated los ntawm ultrasonic transducer ncav cuag cov khoom ntsuas los ntawm tus neeg sawv cev sib txuas, ib feem ntawm lub teeb liab ultrasonic nkag mus rau cov khoom ntsuas, thiab lwm qhov ntawm lub teeb liab ultrasonic yog tshwm sim los ntawm qhov chaw hauv qab ntawm cov khoom. Ultrasonic transducer tau txais cov ncha xav tau los ntawm qhov chaw hauv qab ntawm cov txheej ntsuas, ntsuas lub sijhawm ncig mus ncig ntawm ultrasonic nthwv dej, thiab suav cov nqi tuab raws li cov qauv 1. Los ntawm kev sib kis ntawm ultrasonic ceev ntawm cov khoom siv hauv cov lus 1, qee cov ntaub ntawv siv ceev tuaj yeem pom.
Ultrasonic thickness ntsuas txoj kev
Daim duab schematic ntawm ultrasonic waveform qhia txog kev sib raug zoo ntawm ultrasonic yoj thiab nws txoj kev hla ntawm lub cuab yeej. Los ntawm nws, tus yuam sij rau txoj kev ntsuas thickness yog txhawm rau nrhiav qhov waveform ntawm cov thickness txheej txaus siab, teeb tsa lub rooj vag pem hauv ntej ntawm lub cuab yeej, thiab teeb tsa cov ntaub ntawv rooj vag nyob rau hauv cov thickness txheej txaus siab. Nyob rau hauv Ultrasonic Scanning Microscope Smartscan software, tus yuam sij yog yuav ua li cas txiav txim siab lub thickness ntawm lub cuab yeej thiab txheej ntawm kev txaus siab.
