Isingeniso ku-plywood.

I-Plywood iyinsimbi enjengebhodi enezendlalelo ezintathu noma enezingqimba eziningi eyenziwe ngezingxenye zokhuni ezihlutshiwe zibe ama-veneers noma zisikwe okhunini oluncane, bese zinamathiselwa nge-adhesive. Ngokuvamile, kusetshenziswa ama-veneers anezinombolo ezingavamile, futhi kusetshenziswa izingqimba eziseduze ze-veneers. Izikhombisi-ndlela ze-fiber zinamathiselwe nge-perpendicular komunye nomunye.

I-Plywood ingenye yezinto ezivame ukusetshenziselwa ifenisha, futhi ingenye yamabhodi amathathu amakhulu amaphaneli asekelwe ngokhuni. Ingasetshenziselwa izindiza, imikhumbi, izitimela, izimoto, izakhiwo namabhokisi okupakisha. Iqembu lama-veneers ngokuvamile lihlanganiswa futhi lihlanganiswe ndawonye ngokuvumelana nesiqondiso sezinhlamvu zokhuni zezingqimba eziseduze perpendicular komunye nomunye. Ngokuvamile, ibhodi elingaphezulu kanye nebhodi lesendlalelo sangaphakathi zihlelwa ngokulinganayo ezinhlangothini zombili zesendlalelo esimaphakathi noma umgogodla. I-slab eyenziwe nge-veneer ngemuva kwe-gluing i-criss-crossed ngokusho kwesiqondiso sokusanhlamvu kwezinkuni, futhi icindezelwe ngaphansi kwezimo zokushisa noma ezingashisi. Inani lezendlalelo ngokuvamile liyinombolo eyinqaba, kanti ezimbalwa zinezinombolo ezilinganayo. Umehluko wezakhiwo ezingokoqobo neziwumshini eziqondisweni eziqondile nezivundlile mncane. Izinhlobo ezivame ukusetshenziswa ze-plywood ziyi-3-ply board, i-five-ply board nokunye. I-plywood ingathuthukisa ukusetshenziswa kwezinkuni futhi iyindlela enkulu yokonga izinkuni.

Ukuze kuthuthukiswe izakhiwo ze-anisotropic zokhuni lwemvelo ngangokunokwenzeka, ukuze izakhiwo ze-plywood zifane futhi ukuma kuzinzile, isakhiwo se-plywood evamile kufanele sihambisane nezimiso ezimbili eziyisisekelo: eyodwa i-symmetry; enye iwukuthi imicu yezingqimba eziseduze ze-veneer i-perpendicular komunye nomunye. Umgomo wokulinganisa ukudinga ukuthi ama-veneers ezinhlangothini zombili zendiza emaphakathi yeplywood kufanele afane komunye nomunye kungakhathaliseki ukuthi izinkuni zinjani, ubukhulu be-veneer, inani lezendlalelo, isiqondiso sokhuni. imicu, kanye nomswakama. Ku-plywood efanayo, ama-veneers ohlobo olulodwa nogqinsi angasetshenziswa, noma ama-veneers ezinhlobo ezahlukene nokuqina angasetshenziswa; Nokho, noma yiziphi izingqimba ezimbili ze-veneers ezilinganayo komunye nomunye ezinhlangothini zombili zendiza ephakathi nendawo kufanele zibe nohlobo olufanayo nokuqina. Amaphaneli obuso nangemuva awavunyelwe ukuba abe uhlobo olulodwa lwesihlahla.

Ukwenza isakhiwo se-plywood sihlangabezane nezimiso ezimbili eziyisisekelo ezingenhla ngesikhathi esifanayo, inani layo lezendlalelo kufanele libe yinqaba. Ngakho-ke, i-plywood ngokuvamile yenziwa izendlalelo ezinezinombolo ezingavamile njengezingqimba ezintathu, izendlalelo ezinhlanu, nezingqimba eziyisikhombisa. Amagama ongqimba ngalunye lwe-plywood yilawa: i-surface veneer ibizwa ngokuthi i-surface board, i-veneer yangaphakathi ibizwa ngokuthi ibhodi eliyinhloko; ibhodi langaphambili libizwa ngokuthi iphaneli, futhi ibhodi elingemuva libizwa ngokuthi ibhodi elingemuva; ebhodini eliwumgogodla, isiqondiso se-fiber sihambisana nebhodi Ibizwa ngokuthi ibhodi elide eliyinhloko noma ibhodi eliphakathi. Lapho wenza ama-cavity deck slabs, amaphaneli angaphambili nangemuva kufanele abhekane ngokuqinile ngaphandle.