INDENTATION (STIFFNESS)

An indentation test is a very convenient way to measure the mechanical properties of a sample non-destructively. Unlike the unconfined compression test, where a sample needs to be harvested from the surface, indentation maintains the mechanical environment of the sample at the location of interest and its interaction with the surrounding material. This allows the test to be repeated. In this test configuration, a spherical indenter is pressed against the sample perpendicularly to its surface while the applied displacement and resulting load are recorded. Using a theoretical model, it is possible to calculate material stiffness from the stress-strain curve.

壓痕（剛度）

壓痕試驗(yàn)是一種非常方便的方法來非破壞性地測(cè)量樣品的機(jī)械性能。與需要從表面收獲樣品的無側(cè)限壓縮測(cè)試不同，壓痕將樣品的機(jī)械環(huán)境保持在感興趣的位置及其與周圍材料的相互作用。這允許重復(fù)測(cè)試。在該測(cè)試配置中，球形壓頭垂直于其表面壓在樣品上，同時(shí)記錄施加的位移和產(chǎn)生的載荷。使用理論模型，可以從應(yīng)力-應(yīng)變曲線計(jì)算材料剛度。

應(yīng)用范圍：  宏觀力學(xué)/ 微觀力學(xué)/ 

材料力學(xué)/ 生物力學(xué)/

組織力學(xué)/ 細(xì)胞力學(xué)

動(dòng)態(tài)力學(xué)/ 靜態(tài)力學(xué)/

楊氏模量/ 彈性模量/ 剪切模量/ 體積模量/ 耗能模量/聚集模量/ 洛氏硬度/ 維氏硬度/ 泊松比/滲透性（k）/

測(cè)試材料范圍：

可測(cè)試硬骨骼到超軟凝膠、腦組織、泡沫，大到整只動(dòng)小到超細(xì)

纖維絲的跨度大樣品，0.1μm位移高分辨率、0.25μN力高分辨率，行程達(dá)250mm，力達(dá)250N，動(dòng)靜態(tài)多模態(tài)測(cè)試分析、實(shí)時(shí)視頻記錄反饋測(cè)試，極限滿足各種材料多種力學(xué)性能的測(cè)量表征及評(píng)估。