Issue 15

and me (do imp sali Ma Kn sim alm ma bon the sur Th goo stru dia wa rec the vel De use sam Th iso E iso magnitude asurement [1 wnstairs wal lant durabili ne solution. terial testing owledge of ulations. Th ost no corre terial proper e can be ass sample s [4] face) nor ext e pulse trans d agreement cture have b meter and 20 s carried out eiver (USE-T material, the ocity v and b ad E v  nsity of pure d to measure ple length. T ad E  e kind of me thermic) mod moduli dep was applied t ] mean valu king) with 4 ty [3] . The pe Figure 2 : Th material prop ere is very w lation betwe ties was the essed by mec . To measur ensometer (p mission ultra between the een reporte d − 30 mm le using USG ). The veloci refore the Y one density ρ 2  trabecular bo the time of w hen formula 2 2 l m t v asurement y ulus obtaine ends on the o the implan e (1400 N) a Hz frequency lvic bone wa e hip simulato erties is a p ide range of en the Youn reason for ex hanical testin e the strain ossible dama sonic techni ultrasonical [6]. A serie ngth were dr 20 (Kromph ty of the lon oung's modu , (for details ne was obta ave propaga for the elast ields the so d from tens coefficient o D. Kytyr e t using sphe nd amplitud . This freque s supported r. rerequisite fo trabecular b g's modulus perimental a g, but in thi using standar ge of the sam que [5] is a ly determine s of 20 sam illed out from olz Geotron gitudinal ultr lus can be o see e.g. [7]) . ined by samp tion. For sim ic modulus c called adiaba ile or compr f thermal exp t alii, Frattura e rical femoral e (1000 N) w ncy is higher by an epoxy m r performin one material and anatom ssessment o s case strain d procedure ple surface) quick non-de d and mecha ples from 5 femoral he Elektronik, asonic waves btained from le weighting plification th an be express tic (or dynam essive tests. R ansion  and d Integrità Strut component ere chosen than that of ould. Durin g mechanica properties (E ical location f material pr measuremen s i.e. strain g is inconvenie structive me nically measu different don ads and delip FRG) used ' propagation th e formula and volume m e path of the ed as: ical) Young elationship the specific turale, 15 (201 head. Accord to simulate t normal walk g the test, th Figure 3 : Loa l analysis, es = 0.1 − 4. . The high operties. Ma t is challengin auge (difficu nt. thod for Yo red elastic m ors was test idated. The with a 250 depends on (1) c oupling easurement wave propa 's modulus w between the heat of the 1) 5-13; DOI: 10 ing to the h he most unf ing but with e specimen w ding cycle. pecially in ca 5 GPa) repo discrepancy terial propert g due to the lt attachmen ung's modul oduli of the ed. The spec experiment d kHz vibrato the mechani elasticity mo s. Ultrasound gation was ta hich is large adiabatic E a material C p a .3221/IGF-ESIS. ip contact fo avorable acti out any effec as moistened se of nume rted in litera in the publis ies of trabec brittle natur t to the sam us estimation cancellous b imens of 5 episted in Fi r (USG -T) cal propertie dulus E ad , w (1) probe was ken equal to (2) r than static d and isother t constant st 15.01 7 rces vity t to by rical ture hed ular e of ple . A one mm g. 4 and s of ave the (or mic ress