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BIOMOMENTUM MACH-1 力學(xué)試驗(yàn)機(jī)--自動(dòng)壓痕映射
閱讀：638 發(fā)布時(shí)間：2021-3-15Study Design: Ex vivo animal model.
Methods: Canine, leporine, and swine larynges (n = 4 each) were sagittally bisected, measured, and subjected to normal indentation mapping (indentation at 0.3 mm; 1.2 mm/s) with a 2-mm spherical indenter to quantify normal force along the VF cover layer, structural stiffness, and displacement at 0.8 mN; two-dimensional maps of the free VF edge through the conus elasticus were created for these characterizations.
方法：將 犬，豬膽堿和豬喉（每組n = 4）矢狀平分，測(cè)量，并用BIOMOMENTUM MACH-1 力學(xué)試驗(yàn)機(jī) 2 mm球形壓頭進(jìn)行法向壓痕測(cè)繪（壓痕為0.3 mm； 1.2 mm / s）以量化沿法向力VF覆蓋層，結(jié)構(gòu)剛度和在0.8 mN時(shí)的位移；為了描述這些特征，創(chuàng)建了穿過(guò)圓錐彈性體的自由VF邊緣的二維圖。
Results: Structural stiffness was 7.79 gf/mm (0.15–74.55) for leporine, 2.48 gf/mm (0.20–41.75) for canine, and 1.45 gf (0.56–4.56) for swine. For each species, the lowest values were along the free VF edge (mean ± standard deviation; leporine: 0.40 ± 0.21 gf/mm, canine: 1.14 ± 0.49 gf/mm, swine: 0.89 ± 0.28 gf/mm). Similar results were obtained for the cover layer normal force at 0.3 mm. On the free VF edge, mean (standard deviation) displacement at 0.08 gf was 0.14 mm (0.05) in leporine, 0.11 mm (0.03) in canine, and 0.10 mm (0.02) in swine.
Conclusions: Automated indentation mapping yielded reproducible biomechanical property measurement of the VF cover and intact VF. Divergent VF structural properties across canine, swine, and leporine species were observed.
Key Words: Larynx, vocal fold, mechanical testing, indentation, voice, structural stiffness.
該多軸多材料功能機(jī)械力特性測(cè)試儀是能集成壓縮、張力、剪切、摩擦、穿刺、扭轉(zhuǎn)和壓痕、活性組織電位分布測(cè)試的一體化測(cè)試與培養(yǎng)裝置。能對(duì)生物組織、聚合物、凝膠、生物材料、膠囊、粘合劑和食品進(jìn)行精密可靠的機(jī)械刺
激和表征。允許表征的機(jī)械性能包括剛度、強(qiáng)度、模量、粘彈性、塑性、硬度、附著力、腫脹和松弛 位移控制運(yùn)動(dòng)。
相比于傳統(tǒng)的大型力學(xué)測(cè)試系統(tǒng)，該微觀力學(xué)測(cè)試系統(tǒng)總體較小，可以實(shí)現(xiàn)桌面化的操作流程，操作過(guò)程簡(jiǎn)便。該系統(tǒng)測(cè)試方法面，是多樣化的材料力學(xué)表征工具，是科學(xué)家、工程師和其他各領(lǐng)域用戶的佳選擇。在動(dòng)態(tài)力學(xué)分析、薄膜、復(fù)合物、聚合物、生物產(chǎn)品、醫(yī)學(xué)鑒定和水凝膠等領(lǐng)域都有廣泛應(yīng)用。
材料力學(xué)性能是指材料在不同環(huán)境(溫度、介質(zhì)、濕度)下，承受各種外加載荷(拉伸、壓縮、彎曲、扭轉(zhuǎn)、沖擊、交變應(yīng)力等)時(shí)所表現(xiàn)出的力學(xué)特征。
測(cè)試意義及適用范圍：
系統(tǒng)亮點(diǎn)：
可在標(biāo)準(zhǔn)的培養(yǎng)皿中進(jìn)行力學(xué)刺激實(shí)驗(yàn);
可滿足作為理想的實(shí)驗(yàn)和教學(xué)工具;
大范圍高精度多軸測(cè)試：可測(cè)量動(dòng)態(tài)、靜態(tài)和各種波形的壓縮、張力、剪切和扭矩
用戶友好的軟件用于的數(shù)據(jù)采集和簡(jiǎn)易的分析， 采集的數(shù)據(jù)可導(dǎo)入三方軟件進(jìn)一步分析。
皮膚彈性測(cè)試---軟組織彈性測(cè)試;
纖維材料的彈性--材料彈性測(cè)試;
縫合傷口材料--材料彈性、壓力應(yīng)變測(cè)試;
傷口愈合評(píng)定--材料彈性、壓力應(yīng)變測(cè)試;
細(xì)胞組織培養(yǎng)物雙向模擬--材料壓力、剪切應(yīng)變測(cè)試;
藻酸鹽微球力學(xué)評(píng)估--材料彈性、壓力、剪切應(yīng)變測(cè)試;
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