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    SYSTEMS AND METHODS FOR ESTIMATION AND ANALYSIS OF MECHANICAL PROPERTY DATA ASSOCIATED WITH INDENTATION
    22.
    发明申请
    SYSTEMS AND METHODS FOR ESTIMATION AND ANALYSIS OF MECHANICAL PROPERTY DATA ASSOCIATED WITH INDENTATION 审中-公开
    与印度相关的机械性质数据估算与分析的系统与方法

    公开(公告)号：WO2002073162A2

    公开(公告)日：2002-09-19

    申请号：PCT/US2002/006853

    申请日：2002-03-07

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： SURESH, Subra ,  DAO, Ming ,  CHOLLACOOP, Nuwong ,  VAN, VLIET, Krystyn, J. ,  VENKATESH, T., A.

    IPC: G01N3/42

    CPC classification number: G01N3/42 ,  G01N2203/0075 ,  G01N2203/0078 ,  G01N2203/0094 ,  G01N2203/0212 ,  G01N2203/0218 ,  G01N2203/0286

    Abstract: Systems and methods are disclosed that can provide estimates of elasto-plastic properties of material samples using data from instrumented indentation tests. Alternatively, or in addition, estimated load-depth curves can be constructed by certain methods and systems provided based on known mechanical properties. Some disclosed systems and methods use large deformation theory for at least part of the analysis and/or determinations and/or may account for strains of at least 5% in the area of contact between the indenter and the material sample, which can result in more accurate estimates of mechanical properties and/or deformation behavior.

    Abstract translation: 公开的系统和方法可以使用来自仪器化压痕测试的数据来提供材料样品的弹性塑性性能的估计。 或者或另外，可以通过基于已知机械特性提供的某些方法和系统来构建估计的负载深度曲线。 一些公开的系统和方法对于至少部分分析和/或确定使用大的变形理论和/或可以解释在压头和材料样品之间的接触面积中至少5％的应变，这可导致更多 机械性能和/或变形行为的准确估计。

    METHOD AND APPARATUS FOR THE EVALUATION OF A DEPTH PROFILE OF THERMO-MECHANICAL PROPERTIES OF LAYERED AND GRADED MATERIALS AND COATINGS
    23.
    发明申请
    METHOD AND APPARATUS FOR THE EVALUATION OF A DEPTH PROFILE OF THERMO-MECHANICAL PROPERTIES OF LAYERED AND GRADED MATERIALS AND COATINGS 审中-公开
    评估层状和分级材料和涂层的热机械性能深度剖面的方法和装置

    公开(公告)号：WO1998000698A1

    公开(公告)日：1998-01-08

    申请号：PCT/US1997011689

    申请日：1997-06-30

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  FINOT, Marc ,  KESLER, Olivera ,  SURESH, Subra

    IPC: G01N03/20

    CPC classification number: G01N3/20 ,  B33Y80/00

    Abstract: A technique for determining properties such as Young's modulus, coefficient of thermal expansion, and residual stress of individual layers within a multi-layered sample is presented. The technique involves preparation of a series of samples, each including one additional layer relative to the preceding sample. By comparison of each sample to a preceding sample, properties of the topmost layer can be determined, and residual stress at any depth in each sample, resulting from deposition of the top layer, can be determined.

    Abstract translation: 提出了一种用于确定多层样品中各层的性能如杨氏模量，热膨胀系数和残余应力的技术。 该技术包括制备一系列样品，每个样品相对于前述样品包括一个附加层。 通过比较每个样品与前一个样品，可以确定最上层的性质，并且可以确定由顶层沉积产生的每个样品中任何深度的残余应力。

    DEPTH SENSING INDENTATION AND METHODOLOGY FOR MECHANICAL PROPERTY MEASUREMENTS
    25.
    发明公开
    DEPTH SENSING INDENTATION AND METHODOLOGY FOR MECHANICAL PROPERTY MEASUREMENTS 失效
    EINDRINGTIEFENERFASSUNG和方法用于确定力学性能

    公开(公告)号：EP0894259A2

    公开(公告)日：1999-02-03

    申请号：EP97918701.0

    申请日：1997-04-15

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： SURESH, Subra ,  ALCALA, Jorge ,  GIANNAKOPOULOS, Antonios, E.

    IPC: G01N3

    CPC classification number: G01N3/42 ,  G01N2203/0286

    Abstract: An indentation measurement apparatus is retrofittable onto any of a variety of load-applying frames and includes a mount for mounting an indenter of any geometry (for example blunt or sharp). The arrangement is very stiff and mechanical values including Young's modulus, strain hardening exponent, yield strength, and hardness can be obtained from a single load/unload versus displacement test. A wide variety of materials can be tested using the apparatus. An optical probe can measure displacement of the indenter head relative to a sample. A method of calculating an area of contact between the indenter and the sample directly from the load/displacement measurements is presented, as is a method of calculating the strain hardening exponent.

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