( Thus ( , ( ( when ( ( a ( ceramic object ) ) ( is ( subjected ( to ( a ( tensile force ) ) ) ) ) ) ) ( , ( ( the ( applied load ) ) ( ( has ( to ( ( ( overcome ( the ( compressive stresses ) ) ) ( -LRB- ( ( within ( the object ) ) -RRB- ) ) ) ( before ( ( additional ( tensile stresses ) ) ( can ( ( ( increase and ) break ) ( the object ) ) ) ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (ADVP (RB Thus)) (, ,) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (JJ ceramic) (NN object)) (VP (VBZ is) (VP (VBN subjected) (PP (TO to) (NP (DT a) (JJ tensile) (NN force))))))) (, ,) (NP (DT the) (JJ applied) (NN load)) (VP (VBZ has) (S (VP (TO to) (VP (VB overcome) (NP (DT the) (JJ compressive) (NN stresses)) (PRN (-LRB- -LRB-) (PP (IN within) (NP (DT the) (NN object))) (-RRB- -RRB-)) (SBAR (IN before) (S (NP (JJ additional) (NN tensile) (NNS stresses)) (VP (MD can) (VP (VB increase) (CC and) (VB break) (NP (DT the) (NN object)))))))))) (. .)))
Thus, when a ceramic object is subjected to a tensile force, the applied load has to overcome the compressive stresses (within the object) before additional tensile stresses can increase and break the object.
(ROOT (S (NP (NP (DT The) (NN force)) (VP (VBN applied) (PP (TO to) (NP (DT an) (NN object))))) (VP (VBZ is) (VP (VBN called) (NP (NN stress)))) (. .)))