Scope:

Under uniaxial stress at elevated temperatures, the ASTM C1366 test method is used to measure the tensile strength of monolithic advanced ceramics. Tensile tests reveal the strength and deformation of materials when subjected to uniaxial loads. This uniaxially loaded tensile strength test yields information on faults that limit the strength of a larger volume of uniformly strained material. 

Ceramics have become the go-to material for high-end automobile braking rotors and pads, space re-entry vehicle heat shields, and ball bearings in high-speed and high-temperature applications due to their ability to work at high temperatures. Material development, material comparison,  quality assurance, characterization, reliability assessment, and design data creation are all possible applications for this test procedure. 

Test Procedure:

The ASTM C1366, temperature tensile test examines the effects of high temperatures and strain on tensile strength and material properties using a combination of tensile testing and furnace heating. The specimen is gripped in one of many carefully calibrated tensile testing machines, where an extensometer measures the strain on the specimen as the load is increased continuously and each end is pulled apart until it fails according to acceptable standards. Then, using a stress-strain curve to quantify particular material qualities, visualize the data from the test. Tensile testing can be used to determine whether a material is suitable for a specific application in this way. ASTM C1366 test can be completed at temperatures up to 1800°F. 

Specimen Size : 

ASTM C1366 uses properly prepared cylindrical and flat test specimens with high-quality grips as test specimens. 

Data:

The tensile strength of ceramics is measured in pressure units, most often in Pascal. The standard formula for the tensile strength : 

S_u = P_max / A 

where,

S_u = the tensile strength in units of MPa, P_max = the breaking load 

A = the cross-sectional area in units of mm²