【摘要】：基于Attaf和Jha等提出的理論,在Oliver-Pharr(OP)法計(jì)算壓痕硬度的基礎(chǔ)上,分別建立了卸載功、卸載斜率和壓痕硬度之間的解析模型;用此模型計(jì)算得到了壓痕硬度并與面積法計(jì)算的結(jié)果進(jìn)行了對比分析,分析了卸載斜率和卸載功的計(jì)算誤差對壓痕硬度的影響。結(jié)果表明:卸載斜率的計(jì)算精度受數(shù)據(jù)采集誤差的影響較大,以卸載功計(jì)算壓痕硬度則可避免數(shù)據(jù)采集誤差的影響;與OP法相比,以卸載功計(jì)算的壓痕硬度與面積法得到的更為接近;卸載斜率計(jì)算誤差對壓痕硬度計(jì)算精度的影響大于卸載功計(jì)算誤差的。
[Abstract]:Based on the theory proposed by Attaf and Jha, the analytical models between unloading work, unloading slope and indentation hardness are established on the basis of Oliver-Pharr (OP) method. The indentation hardness is calculated by this model and compared with the results calculated by the area method. The influence of the unloading slope and the calculation error of the unloading work on the indentation hardness is analyzed. The results show that the accuracy of unloading slope is greatly affected by the error of data acquisition, and the calculation of indentation hardness by unloading work can avoid the influence of data acquisition error. Compared with the OP method, the indentation hardness calculated by the unloading work is closer to that obtained by the area method, and the influence of the error of the unloading slope calculation on the precision of the indentation hardness calculation is greater than that of the unload work calculation error.
【作者單位】： 湖北汽車工業(yè)學(xué)院機(jī)械工程學(xué)院;
【基金】：湖北省自然科學(xué)基金資助項(xiàng)目(2014CFB623) 湖北汽車工業(yè)學(xué)院博士基金資助項(xiàng)目(BK201303)
【分類號】：TB302.3

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