Syn op sis: The cryo genic int er lami nar fr act ure tou gh ness of wov en gla ss-epo xy lam in ates was me asur ed un der mo de lo ad ing us ing do uble ca nti lev er be am (DCB) tes ts. The te sts we re per form ed at room temp era ture (R. T.), li quid ni tro gen te mper atur e (77K) and liq uid hel ium tem pe ratu re (4K) t o eva lua te th e eff ect of tem per atu re an d ge ome tri cal var iat io ns on in terl am inar fra ct ure tou ghn ess. The fra ctu re sur fa ces we re ex amin ed by

more »

... anni ng elec tron mic rosc opy to veri fy the fa il ure mec han isms. A fin ite elem ent mo del wa s us ed to per fo rm the dela mi nat ion cra ck an alys is. T he res ults of the fi nite el eme nt ana lys is are ut il ized to su ppl eme nt the exp erime ntal da ta. Key words: cryo mech anics, do uble can tile ver beam te st ing, f ini te ele ment meth od, gla ss-cloth/ ep oxy lam in ate, interlam inar fr ac ture toug hne sss