Thermal conductivity versus depth profiling of inhomogeneous materials using the hot disc technique
Artikel i vetenskaplig tidskrift, 2016

Transient measurements of thermal conductivity are performed with hot disc sensors on samples having a thermal conductivity variation adjacent to the sample surface. A modified computational approach is introduced, which provides a method of connecting the time-variable to a corresponding depth-position. This allows highly approximate—yet reproducible—estimations of the thermal conductivity vs. depth. Tests are made on samples incorporating different degrees of sharp structural defects at a certain depth position inside a sample. The proposed methodology opens up new possibilities to perform non-destructive testing; for instance, verifying thermal conductivity homogeneity in a sample, or estimating the thickness of a deviating zone near the sample surface (such as a skin tumor), or testing for presence of other defects

Depth profiling techniques

Thermodynamic properties

Natural materials

Finite-element analysis

Nondestructive testing techniques

Thermal conductivity

Integral calculus

Contact impedance

Diseases and conditions

Författare

Andrey Sizov

Hot Disk AB

Daniel Cederkrantz

Hot Disk AB

Lars Salmi

Västra Götalandsregionen

Arne Rosen

Institutionen för fysik, GU

Lars Jacobson

Chalmers Industriteknik (CIT)

S. E. Gustafsson

Göteborgs universitet

Mattias Gustavsson

Hot Disk AB

Review of Scientific Instruments

0034-6748 (ISSN) 1089-7623 (eISSN)

Vol. 87 7 074901-

Ämneskategorier

Materialteknik

Medicinteknik

DOI

10.1063/1.4954972

Mer information

Senast uppdaterat

2023-11-17