A self-affine geometrical model of dynamic RT-PMMA fractures: implications for fracture energy measurements

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%/smaryr"> iew" -tadata/h <%3A%2F%2Fl.handle.net/1%2F985/9%2F00/m&rft_="a.1007/s%2F0704-015-0025-2" &rfr_="aiocu%3Asid%2Fdsce/Mrg/1%3Arepote ory&rft.ntrolute=or=PP, %2C+an-Benoit; &rft.ntrolute=or=HMITTBUHL, %2C+an-B&rft.ntrolute=or=EL, %2C+ivier; &rft.ntrolute=or=ND, %2C+ristophe" &rft.te" =15-06-19T14:1%3A11%3A25Z&rft.te" =15-06-20T00:0%3A01%3A32Z&rft.te" =15-05" &rft.te" =15-06-19T14:2%3A29%3A10Z&rft.entifier" a76-9429, %2C+73-2673" &rft.entifier" a"> <%3A%2F%2Fl.handle.net/1%2F985/9%2F00/m&rftescription" =ofilometric i+aging o+of+acture e+rfaces o+of+bber t+ughened m+lymer h+has+en p+rformed a+at+two+fferent f+solutions (+%28a%29+at+rge s+ales. +%5B10+%CE%BC%5Cmu m+m%E2%80%9325+mm%5D+ing t+an+to-mechanical p+ofilometer a+and+%28b%29+at+all s+ales. +%5B195 +%CE%BC%5Cmu m+m%E2%80%9348 m+mm%5D+ing t+an+terferometric o+tical m+croscope. W+We+troduced."+a+lf-affine g+ometrical m+del o+ing t+two+rameters: %3A+the+rst e+ponent; +and+the+pothesy. W+We+owed t+at f+rme+bber t+ughened m+terials t+the+proximation. +of+the+eated r+rfaces +by+a+an f+at p+ane l+ads t+ug+a+or e+timation o+of+the+namic R+acture e+ergy m+dcG_{I%7BcG_%7D.+The+ncription+xmof+the+eated r+ughne+acture e+rfaces +by+a+lf-affine g+del o+is+owedn+ug+ovide a+a+lnificantly b+tter a+proximation. .+A+new+and+iginal g+ometrical m+dhod. +is+troduced."+ug+timate s+lf-affine g+rameters: %3A+the+3D+rfaces +aling m+dhod. .+rst e+ponent; s+are+owedn+ug+be+ique, %2C+%CF%87%3D0.6%C2%B.100%5Cmet+%3D0.6%5Cpm+100+rme+the+nferent f+acture e+nes a+and+asurements<+ales. .+Tothesy. +tios i+dicate a+a+lnificantly+fference o+of+acture e+rfaces +ughness; +plitude d+pending o++xmthe+servation r+solutions +en t+the+nrending t+chnique i+is+t w+rrectly i+troduced.".&rftenguageSen" &rfteblisher" =ringer" &rfteghtsMD=st-print" &rftebject" =Damic R+acture e&rftebject" =lymers; &rftebject" =Sfaces +ughness; &rftebject" =Sf-affinity; &rftebject" =rst e+ponent; &rftebject" =Tothesy. &rftebject" =Fcture e+ergy m&rftebject" =pid c+ack p+opagation" &rftetle="DA+lf-affine g+ometrical m+del o+of+namic R+-PMMA f+acture e %3A+plications f+rme+acture e+ergy m+asurements %/codin" a"xangudarvascet/1.L: Eodin" /> %/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesA self-affine geometrical model of dynamic RT-PMMA fractures: implications for fracture energy measurements %/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dsaddis s_addr" e

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%/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dssplice-em-view" -herwi pes=e Mcument v>
%/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dssplice-em-view" -thors" /
Autr: Ma>v> td164351a>tdtdtdv> tdv> td203902a>tdtdtdv> td459ma>tdtdtdv>
%/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dssplice-em-view" -herwi URI: tp://hdl.handle.net/10985/9600" a> an> v>
%/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dssplice-em-view" -herwi DOI:span> 91007/s10704-015-0025-2" a> an> v>
%/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dssplice-em-view" -herwi Date: <15-05" a>an> v>
%/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dssplice-em-view" -herwi Tifree l'iaasovu :span> an> v>
%/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="dssplice-em-view" -scription ofsplice-em-view" -ttract" cRésumé: div xmlns:i18n="http://apache.org/cocoon/i18n/2.1" c>ofilometric imaging of fracture surfaces of rubber toughened polymer has been performed at two different resolutions (a) at large scales [10 μ\upmu m–25 mm] using an opto-mechanical profilometer and (b) at small scales [0.195 μ\upmu m–0.48 mm] using an interferometric optical microscope. We introduced a self-affine geometrical model using two parameters: the Hurst exponent and the topothesy. We showed that for rubber toughened materials the approximation of the created surface by a mean flat plane leads to a poor estimation of the dynamic fracture energy GIdcG_{Idc}. The description of the created rough fracture surface by a self-affine model is shown to provide a significantly better approximation. A new and original geometrical method is introduced to estimate self-affine parameters: the 3D surface scaling method. Hurst exponents are shown to be unique, χ=0.6±0.1\chi =0.6\pm 0.1 for the different fracture zones and measurement scales. Topothesy ratios indicate a significant difference of fracture surface roughness amplitude depending on the observation resolution when the detrending technique is not correctly introduced." a>v> %/ionl"cleom.atmire.dsce/Mrsoap.UonlitiesAdass="ds-trramegraph em-view" -togg prem-view" -togg p-botmarc>a href="/handle/10985/1800" ?own =ful />Ainee.or'iaatice faeomplètea>

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