
shabda bahirgamanam

oru vasthu athinte aantharika ghadanayil maattaanaavaatha maattangalkk vidheyamaakumbol, udaaharanathinu, vaardhakyam, thaapanila gradiantukal allengil baahya mechanical sakthikal enniva kaaranam villal roopappedal allengil plaastik roopabhedam ennivayude falamaayi sambhavikkunna kharavasthukkalile shabda (ilaastik) tharamgangalude vikiranam prathibhaasamaan shabda udvamanam (aee).
prathyekichum, ilaastik tharamgangalude praadeshika srothassukal srishtikkunna gadanaaparamaaya maattangalodoppam vasthukkaludeyum gadanakaludeyum "mechanical loading" prakriyakalil eiii. iii sambhavikkunnu. oru vasthuvilo athinte uparithalathilo shekharicha ilaastik oorjjam athivegam purathuvidumbol ulppaadippikkunna ilaastik allengil stress tharamgangal ulppaadippikkunna oru vasthuvinte cheria uparithala sthaanachalanathinu ithu kaaranamaakunnu.
eiii. iii. yude srothassukal srishtikkunna tharamgangal gadanaaparamaaya aarogya nireekshanam (ezz. echu. emm), gunanilavaara niyanthranam, sisttam feedback, prosess monittaring, mattu mekhalakal ennivayil praayogika thaalpparyamullavayaanu. shm aaplikkeshanukalil, kedupaadukal kandethunnathinum kandethunnathinum swabhaavasavisheshathakal nalkunnathinum aee saadhaaranayaayi upayogikkunnu.
prathibhasangal.
praadeshikavalkkaricha sammarda oorjjathinte druthagathiyilulla release moolamundaakunna oru meteeriyalinullile shanikamaaya ilaastik tharamgangalaanu shabda udvamanam. oru "ivant" uravidam ennathu meteeriyalilekku ilaastik oorjjam purathuvidunna prathibhaasamaan, athu pinneedu ilaastik tharamgamaayi vyaapikkunnu. 1 kilohertsil thaazheyulla freekwansi shreniyil shabda udvamanam kandethaanum 100 emhs vareyulla freekwansikalil report cheyyaanum kazhiyum, ennaal purathuvidunna oorjjathinte bhooribhaagavum 1 kiloherts muthal 1 emhs vareyulla paridhiyilaan. druthagathiyilulla sammarddam-release cheiyunna sambhavangal 0 hearts muthal aarambikkunna sammarda tharamgangalude oru spectrum srishtikkunnu, saadhaaranayaayi niravadhi MHz ll veezhunnu.
aee saankethikavidyakalude moonnu pradhana prayogangal ivayaanu 1) uravida sthaanam-oru "ivant" uravidam sambhavicha sthalangal nirnnayikkuka; 2) metteeriyal mechanical prakadanam-metteeriyalukalum gadanakalum vilayiruthukayum swabhaava savisheshathakal nalkukayum cheyyuka; 3) aarogya nireekshanam-oru gadanayude surakshithamaaya pravartthanam nireekshikkuka, udaaharanathinu, paalangal, mardha kandeynarukal, pipe lineukal muthalaayava.
sameepakaala gaveshanangal kandethuka mathramalla, villalukalude valarcha, gharshanam, delamination, matricks cracking thudangiya uravida samvidaanangal savisheshamaakkunnathinum aee upayogikkunnathilaanu shradha kendreekarichirikkunnathu. eathu uravida samvidaanam nilavilundennu anthima upayokthaavinodu parayanum gadanaaparamaaya attakuttappanikal aavashyamaano ennu nirnnayikkaan ithu avare anuvadikkum.
aee ennathu maattaanaavaatha oorjja prakaashanavumaayi bandhappettirikkunnu. gharshanam, arukkal, aaghaatham ennivayulppede bhauthika parajayam ulppedaatha srothassukalil ninnum ithu srishtikkaan kazhiyum.
upayogikkunnu.
vasthukkalude vinaashakaramallatha parishodhanaykk shabda udvamanam prayogikkunnathu saadhaaranayaayi 20 kilohartsinum 1 emhsinum idayilaanu nadakkunnathu. parambaraagatha ultrasonic testingil ninnu vyathyasthamayi, aee upakaranangal roopakalppana cheythirikkunnathu paraajayatthilo sammarddathilo ulla metteeriyal ulppaadippikkunna shabda udvamanam nireekshikkunnathinaan, allathe baahyamaayi srishtikkappedunna tharamgangalil metteeriyalinte swaadheenathekkurichalla. shradhikkaatha nireekshanatthinidayil bhagika parajayam rekhappeduthaam. onniladhikam looad saikkilukalil eiii. iii. pravartthanatthinte nilavaaram nireekshikkunnathu parishodhanaykk vidheyamaakunna bhagangal sevanathil thudaraan anuvadikkunna niravadhi eiii. iii. suraksha parisodhana reethikalkku adisthaanamaanu.
udaaharanathinu, welding prakriyayil villalukalude roopeekaranam padikkaan eee saankethikavidya upayogikkunnu, pakaram kooduthal parichithamaaya ultrasonic testing saankethikavidya upayogichu weld roopeekarichathinu sesham avaa kandethunnu.
sajeevamaaya sammarddathilulla vasthukkalil, parakkunna samayat oru vimaanathinte chila gadakangal polullavayil, oru pradeshathu gadippichirikkunna transducerukalkku athu padaraan thudangunna nimishathil villal roopappedunnathu kandethaan kazhiyum. signalukal record cheyyaanum shabdam vyathyastha transducerukalil athunnathinulla samayam alakkunnathiloode avayude uthbhavathinte krithyamaaya pradesham kandethaanum oru koottam transducerukal upayogikkaam.
uyarnna marddathil draavakangal kondupookunna mardha paathrangalilum pipelineukalilum villalukal roopappedunnathu kandethunnathinu shabda udvamanathinaayulla deerghakaala thudarchayaaya nireekshanam moolyavathaayathaanu. presher vessalukalude nondestructive testinginaayi shabda udvamanam upayogikkunnathinulla maanadandangal asme, iso, europian samooham enniva vikasippicheduthittundu.
shakthippeduthiya konkreett gadanakalile naashanashtam kanakkakkaan eee saankethikavidya upayogikkunnu.
vinaashakaramallatha parishodhanaykk purame, prakriya nireekshanatthil shabda udvamana nireekshanatthinu prayogangalundu. shabda udvamana nireekshanam vijayakaramaayi upayogicha aaplikkeshanukalil draveekritha kidakkakalile vairudhyangalum baachu graanuleshanile end pooyintukalum kandethunnu.

