Mupunga. 1. Nzira yekuongorora kugadzirwa kwesimbi isina ngura: Kubatanidzwa kweDouble 2D Matrix muTRL Mode.

Makodhi, stanadards, uye nzira dzakashanduka kuti dzibvumire kushandiswa kwephased array ultrasonic testing (PAUT) pachinzvimbo cheRT pakuedza austenitic welds. Yakatanga kushandiswa zvakanyanya muzviteshi zvesimba renyukireya makore angangoita gumi nemashanu apfuura, kushandiswa kwe dual (2D) array sensor assemblies kwakapararira kumafuta negasi nedzimwe nzvimbo uko kunodiwa kuongororwa nekukurumidza, kwakavimbika uye kwakachengeteka kwe austenitic welds dzakanyanya kuderera.
Midziyo mitsva inotakurika ine zvikamu zvemaarray ine software yakasimba yakavakirwa mukati inokutendera kuti ugadzire, uise uye uturikire 2D matrix array scans nekukurumidza uye zvinobudirira pasina kuunza mafaira emutemo we focus akagadzirwa nema calculator ekunze kana masisitimu ekudzora ari kure uchishandisa software yepamusoro yePC.
Nhasi uno, matekinoroji ekuongorora akavakirwa pa2D array transducers anopa kugona kwepamusoro-soro kwekuona zvikanganiso zvegirth uye axial musimbi isingatsvedzeri uye simbi dzakasiyana. Iyo standardized 2D dual matrix configuration inogona kunyatsovhara huwandu hwekuongorora hwesimbi isingatsvedzeri uye inogona kuona zvikanganiso zvakati sandara uye zvakakura.
Maitiro ekuongorora eUltrasound anowanzo sanganisira ma arrays maviri e ma matrices ane mativi maviri akaiswa pazvikamu zvinogadziriswa zvine chimiro che wedge zvine ma contour anoenderana nedhayamita yekunze yechinhu chiri kufungwa nezvacho. Shandisa ma frequency akaderera - 1.5 MHz kune akasiyana ma weld esimbi nezvimwe zvinhu zvinoderedza attenuation, 2 MHz kusvika 3.5 MHz kune ma substrates esimbi isina ngura akagadzirwa zvakafanana uye ma weld.
Kurongeka kweT/R mbiri (kutumira/kugamuchira) kunopa zvakanakira zvinotevera: hapana "nzvimbo yakafa" iri pedyo nepamusoro, kubviswa kwe "manzwi epantom" anokonzerwa nekuratidzira kwemukati mu wedge, uye pakupedzisira kunzwisiswa kuri nani uye chiyero chesignal-to-noise (ratio signal/noise). noise figure) ) nekuda kwekubatana kweT neR beams.
Ngatitarisei nzira yePA UT yekudzora kugadzirwa kwesimbi dzisina ngura dzinoshandiswa neaustenitic.
Pakuita kutonga kwekugadzira, panzvimbo peRT, kutonga kunofanira kufukidza huwandu hweweld uye ukobvu hwese hwemadziro enzvimbo inokanganiswa nekupisa. Kazhinji, chivharo chesolder chinenge chiripo. Mu carbon steel welds, zvinokurudzirwa kushandisa ma shear waves kuratidza vhoriyamu inodzorwa kumativi ese, nepo last half wave ichiwanzo shandiswa kuwana specular reflections kubva mukukanganisa kuri pa weld bevel.
Pama frequency akaderera, nzira yakafanana ye shear wave inogona kushandiswa kuyedza proximal bevel ye stainless steel welds, asi haina kuvimbika pakuyedza kuburikidza ne austenitic weld material. Pamusoro pezvo, kune anonzi CRA welds, kune corrosion-resistant alloy coating iri mukati me carbon steel pipe, uye hafu yekupedzisira ye wire jumper ye cross beam haigone kushandiswa zvinobudirira.
Ngatitarisei nzira dzekuongorora mienzaniso tichishandisa chishandiso chinotakurika cheUT nesoftware, sezvakaratidzwa muMufananidzo 1.
Matransducer maviri e2D array anogadzira matanda eP-wave ane refracted ane 30 kusvika 85 degrees anogona kushandiswa kufukidza vhoriyamu yakazara. Kune ukobvu hwemadziro kubva pa15 kusvika 50 mm, mafrequency kubva pa1.5 kusvika 2.25 MHz anoonekwa seakakodzera, zvichienderana nekuderera kwe substrate.
Nekugadzirisa angle ye wedge uye magadzirirwo e array probe elements, mhando dzakasiyana dze refractive angle scans dzinogona kugadzirwa zvinobudirira pasina ma side lobes akabatana (Mufananidzo 2). Chikamu che wedge node mu plane of incidence chinoderedzwa, zvichiita kuti beam exit point ive pedyo ne weld sezvinobvira.
Kushanda kwe 2.25 MHz 10 x 3 dual array array muTRL mode kwakaongororwa pa 25 mm ukobvu hwemadziro e 304 stainless steel plate. Sampuro dzekuyedza dzaive dzakaita seV-shaped slope uye "as-welded" surface condition uye dzaive nezvikanganiso zve weld zvakanyatsojeka zvakafanana ne weld.
Mupunga. 3. Data remhando yezvikamu rakasanganiswa remhando ye2.25 MHz 10 x 3 Dual Array (TRL) pane weld yesimbi isina ngura ye304.
Pamufananidzo 3 panoratidza mifananidzo yedata rePAR rakabatanidzwa remakona ese e refraction (kubva pa30° kusvika 85° LW) pamwe chete nehurefu hwese hwe weld. Kuwanikwa kwedata kwakaitwa padanho rekuwedzera rakaderera kudzivirira kuzadzwa kwezvikanganiso zvinopenya zvakanyanya. 16-bit data resolution inobvumira marongero akakodzera ekuwedzera kwekuwedzera kwemhando dzakasiyana dzezvikanganiso. Kududzirwa kwedata kunogona kuitwa nyore nyore nekuisa projection shutter zvakanaka.
Mufananidzo wekanganiso imwe chete yakagadzirwa uchishandisa data rakafanana rakabatanidzwa unoratidzwa muMufananidzo 4. Tarisa mhedzisiro:
Kana usingade kubvisa chivharo usati waongorora, imwe nzira yekuongorora inogona kushandiswa kuona kuputika kweaxial (transverse) mumapipe welds: imwe array array probe inogona kushandiswa mu pulse echo mode "kutsvedza" chivharo che weld. Ruzha rwezwi kubva pasi Sezvo ruzha ruchipararira zvakanyanya mu substrate, mafungu e shear anogona kuona zvikanganiso zviri pedyo ne weld.
Zvakanaka kuti welds dziongororwe munzira ina dzemabara (Mufananidzo 5) uye dzinoda kuti wedges mbiri dzakafanana dziongororwe kubva kumativi akasiyana, dzichienda kune wachi uye dzichienda kune wachi. Zvichienderana nehuwandu uye saizi yezvinhu zvega zve array, wedge assembly inogona kugadziriswa kuti iwane makona ekurefraction kubva pa40° kusvika 65° zvichienzaniswa negwara re scan axis. Mawaya anopfuura 50 anowira pasero rega rega rekutsvaga. Chishandiso cheUS PA chakagadzirwa zvakanaka chine karukureta yakavakirwa mukati chinogona kubata nyore nyore netsananguro yemaseti emitemo yekutarisa ine skews dzakasiyana, sezvakaratidzwa muMufananidzo 6.
Kazhinji, kutevedzana kwemitsara miviri yekutarisa kunoshandiswa kufukidza huwandu hwecheki. Nzvimbo dze axial dzemitsara miviri yekuskena dzinoonekwa kubva pakukora kwepombi nehupamhi hwetipi yeweld. Mutsetse wekutanga wekuskena unomhanya pedyo nekumucheto kweweld, zvichiratidza zvikanganiso zviri pamudzi weweld, uye mutsetse wechipiri wekuskena unopedzisa kufukidza kweHAZ. Nzvimbo yepakutanga ye probe node ichagadziriswa kuitira kuti nzvimbo yekubuda ye beam ive pedyo nekugunwe kwekorona pasina kuratidzwa kwakakosha kwemukati mu wedge.
Nzira iyi yekuongorora yakawanikwa ichishanda zvakanaka pakuona zvikanganiso zve axial zvakakanganiswa. Pamufananidzo 7 panoratidza mufananidzo we phased array wakatorwa pa axial crack mu stainless steel weld: zvikanganiso zvakawanikwa pamakona akasiyana-siyana ekutsvedza uye SNR yakakwira yaigona kuonekwa.
Mufananidzo 7: Data rakabatanidzwa rezvikamu zve axial cracks mu stainless steel welding (mhando dzakasiyana dze SW angles and intensities): conventional projection (kuruboshwe) uye polar projection (kurudyi).
Mabhenefiti ePA UT yepamusoro senzira yekurapa radiography ari kuramba achionekwa mumafuta negesi, kugadzira magetsi, kugadzira uye mamwe maindasitiri anovimba nekuongororwa kwakavimbika kweaustenitic welds. Saizvozvowo, zvishandiso zvePA UT zvakabatanidzwa zvizere, firmware ine simba uye 2D array probes zvinoramba zvichiita kuti kuongororwa uku kuve kwakaderera uye kunoshanda.
Guy Maes ndiye director wezvekutengesa weZetec kuUT. Ane ruzivo rwemakore anopfuura makumi maviri nemashanu mukugadzira nekushandisa nzira dzepamusoro dze ultrasound, kuongorora kugona uye kugadzira software. Kuti uwane rumwe ruzivo, fonera (425) 974-2700 kana kushanyira www.zetec.com.
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