Kupesvedzera Kwezvakatipoteredza Zvinhu paKusimba kweFiber Yakasimbiswa Plastic Reinforcement (FRP) Bhara

Fiber Yakasimbiswa Plastic Reinforcement(FRP Reinforcement) zvishoma nezvishoma iri kutsiva yechinyakare simbi yekusimbisa muinjiniya yehurumende nekuda kwehuremu hwayo, simba repamusoro uye inodzivirira marara. Nekudaro, kusimba kwayo kunokonzerwa neakasiyana ezvakatipoteredza zvinhu, uye zvinotevera zvakakosha zvinhu uye nhanho dzinofanirwa kutariswa:

1. Humidity nemvura zvakatipoteredza

Influence mechanism:

Hunyoro hunopinda mukati me substrate ichikonzera kuzvimba uye kunetesa iyo fiber-substrate interface bond.

Hydrolysis yegirazi fibers (GFRP) inogona kuitika nekurasikirwa kukuru kwesimba; kabhoni fibers (CFRP) haina kukanganiswa.

Mvura uye yakaoma bhasikoro inomhanyisa kuwedzera microcrack, zvichikonzera delamination uye debonding.

Matanho ekudzivirira:

Sarudza yakaderera hygroscopicity resins (eg vinyl ester); kupfeka kwepamusoro kana kurapa kwekudzivirira mvura.

Sarudze CFRP munzvimbo yakareba ine hunyoro.

2. Tembiricha uye Thermal Cycling

High tembiricha mhedzisiro:

Resin matrix inopfava (pamusoro pegirazi tembiricha yekuchinja), zvichikonzera kudzikira kuoma uye simba.

Kupisa kwakanyanya kunomhanyisa hydrolysis uye oxidation reaction (semuenzanisoAramid fiberAFRP inotapukirwa nekudzikira kwekupisa).

Low tembiricha mhedzisiro:

Matrix embrittlement, inowanzoita micro-cracking.

Thermal cycling:

Musiyano mune coefficient yekuwedzera kwekupisa pakati pefiber uye matrix inotungamira mukuunganidzwa kwekushushikana kwemukati uye kunokonzeresa kusungirirana.

Matanho ekudzivirira:

Kusarudzwa kwepamusoro tembiricha inodzivirira resin (eg bismaleimide); optimization yefiber/substrate thermal match.

3. Ultraviolet (UV) mwaranzi

Influence mechanism:

UV inokonzeresa mafoto-oxidation maitiro eiyo resin, zvichitungamira kune pamusoro pechalking, embrittlement uye kuwedzera micro-kutsemuka.

Inowedzera kupindira kwekunyorova uye makemikari, zvichikonzera kukanganisa kwe synergistic.

Matanho ekudzivirira:

Wedzera UV absorbers (semuenzaniso titanium dioxide); vhara pamusoro nechikamu chekudzivirira (eg polyurethane coating).

Gara uchiongororaFRP zvikamumunzvimbo dzakavhurika.

4. Kuora kwemakemikari

Acid environment:

Kukukurwa kweiyo silicate chimiro mugirazi fibers (GFRP inonzwisisika), zvichikonzera kuputsika kwefiber.

Alkaline nharaunda (semuenzaniso kongiri pore zvinwiwa):

Inokanganisa siloxane network yeGFRP fibers; resin matrix inogona saponify.

Carbon fiber (CFRP) ine yakanakisa alkali kuramba uye inokodzera kongiri zvimiro.

Nzvimbo dzekupfapfaidza munyu:

Chloride ion inopinda inomhanyisa kuvhiringika kwechiso uye inopindirana nehunyoro kuti iwedzere kuderera kwekuita.

Matanho ekudzivirira:

Kusarudzwa kwemakemikari anopesana nefiber (semuenzaniso, CFRP); kuwedzera kwemafuta asingadziviriri kune matrix.

5. Mazaya echando anonyungudika

Influence mechanism:

Hunyoro hunopinda mumamicrocracks hunoomesa uye hunowedzera, huchiwedzera kukuvara; kudzokorora kuomesa nechando uye kunyunguduka kunotungamirira kukuputika kwematrix.

Matanho ekudzivirira:

Kudzora kunyura kwemvura; shandisa flexible resin matrix kuderedza brittle kukuvara.

6. Kureba kwenguva refu uye kukambaira

Static load effects:

Kukambaira kweresin matrix kunotungamira mukugovaniswazve kwekushushikana uye mafiber anoiswa kune yakakwira mitoro, iyo inogona kukonzeresa kutyoka.

AFRP inokambaira zvakanyanya, CFRP ine yakanakisa creep kuramba.

Dynamic loading:

Kuneta kurodha kunomhanyisa microcrack kuwedzera uye kunoderedza kuneta hupenyu.

Matanho ekudzivirira:

Bvumira kuchengetedzwa kwepamusoro mukugadzira; sarudza CFRP kana yakakwirira modulus fibers.

7. Kubatanidza kwezvakatipoteredza

Mamiriro ezvinhu epanyika chaiwo (semuenzaniso, nzvimbo dzemugungwa):

Humidity, munyu pfapfaidzo, kushanduka kwetembiricha uye mitoro yemichina inoita synergistically kupfupisa hupenyu zvakanyanya.

Mhinduro nzira:

Multi-factor accelerated kuchembera kuyedza kuongorora; dhizaini kuchengetedza zvakatipoteredza discount factor.

Pfupiso uye Mazano

Kusarudzwa Kwezvinhu: Inofarirwa mhando yefiber zvichienderana nenharaunda (semuenzaniso CFRP yakanaka makemikari kuramba, GFRP yakaderera mutengo asi inoda kuchengetedzwa).

Kudzivirirwa dhizaini: pamusoro pekuvhara, kuvhara kurapwa, optimized resin kuumbwa.

Kutarisisa uye kugadzirisa: kugaroonekwa kwemicro-cracks uye kuderedzwa kwekuita, kugadzirisa panguva.

Kusimba kweFRP kusimbisainoda kuvimbiswa nemusanganiswa wekugadzirisa zvinhu, dhizaini yekugadzira uye kuongorora kuchinjika kwezvakatipoteredza, kunyanya munzvimbo dzakaomarara umo kushanda kwenguva refu kunoda kunyatsoongororwa.