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Thermal Characterization of Aluminium-Based Composite Using Laser Flash Analysis (CAT#: STEM-PPA-0057-WXH)

Introduction

Aluminium-based composites (AMCs) have been successfully utilized in many technological sectors including, automobile, aerospace, microelectronics, marine, recreational and military for the design of a wide range of components and devices. AMCs are highly recommended because of the versatile property combinations, which they can be tailored to possess, properties such as: high specific strength and stiffness, good corrosion and oxidation resistance, tribological properties, low coefficient of thermal expansion, among others.




Principle

The laser flash analysis or laser flash method is used to measure thermal diffusivity of a variety of different materials. An energy pulse heats one side of a plane-parallel sample and the resulting time dependent temperature rise on the backside due to the energy input is detected. The higher the thermal diffusivity of the sample, the faster the energy reaches the backside.

Applications

Used to measure thermal diffusivity of a variety of different materials.

Procedure

The front surface of a plane-parallel sample is heated by a light pulse and the resulting temperature rise at the sample’s rear face is recorded as a function of time. The higher the thermal diffusivity, the faster the temperature rise reaches the rear face.

Materials

Light/Laser Flash Analyzers