Transient plane source technique

This technique has been used to measure a specific heat of fibre-reinforced phenol-formaldehyde resins [39]. 

---

TPS (Transient Plane Source) technique has been shown to be effective method to measure the thermal conductivity, diffusivity of rare earth oxide powder such as gadolinium oxide, samarium oxide, and yttrium oxide. The details of the measutrement are described in Ref 66. The experimental results of effective thermal conductivity as well as thermal diffusivity of the above described three rare earth oxides are tabulated in Table 5-7. 

Gustafsson, S.E. (1991) Transient plane source techniques for thermal conductivity and thermal diffusivity measurements of solid materials. Rev. Sci. Instrum., 62, 797-804. 

Various other methods have been described for the determination of thermal conductivity. Capillarity has been used to measure the thermal conductivity of LDPE, HOPE and PP at various temperatures and pressures [30]. A transient plane source technique has been applied in a study of the dependence of the effective thermal conductivity and thermal diffusivity of polymer composites [31]. 

The Mathis Instruments Hot Disk Thermal Constants Analyzer is an emerging technology that can measme the in-plane and through-plane TC of an anisotropic material in the same test, using the transient plane source technique [13-17]. The saisor used in this test method is a 10 micron thick nickel foil embedded between two 25.4 micron thick layas of Kapton polyimide film. The nickel foil is wound in a double spir pattern with a radius of 3.189 mm. The thomal eonductivities were measmed at 23"C. 

A comparison of guarded hot plate, transient plane source and modified hot wire methods has been made54 using polyurethane foam, and the strengths and weaknesses of the techniques discussed,... 

Transient Plane Source Gustafsson Hot Disk Technique, Standards for Contact Transient Measurements of Thermal Properties, National Physical Laboratory, United Kingdom, accessed Jrme 2006 at http //www.npl.co.uk-thermal-ctm-... 

---