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Tip radius variation with elastic indentation depth

Journal Article · · Materials Letters
 [1];  [2];  [3]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  2. Intel Corporation, Portland, OR (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
+ Show Author Affiliations

The reduced elastic modulus of a material is measured with a nanoindenter probe that is operated in the tapping mode. The resonant frequency of a freely oscillating cantilever is reduced when contact is made between the indenter tip and surface under investigation. It’s shown using elasticity theory that the elastic deformation is a function of the indenter tip radius. A deeper penetration within the elastic range can change the tip radius, and introduce an error of 10% in calculating the reduced elastic modulus.

Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1477973
Alternate ID(s):
OSTI ID: 1582951
Report Number(s):
SAND--2018-10179J; 667940
Journal Information:
Materials Letters, Journal Name: Materials Letters Vol. 227; ISSN 0167-577X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (4)

Figure 1(p. 2)figure Figure 1
Figure 2(p. 3)figure Figure 2
Table 1(p. 4)table Table 1
Figure 3(p. 5)figure Figure 3

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Related Subjects

36 MATERIALS SCIENCE