Category: Transient Plane Source
Author(s): Aldina Santiago, Helder D. Craveiro, Joao Paulo C. Rodrigues, LuC-s LaC-m, LuiB-s Laim
Keywords: Cold Formed Steel, Fire Protection, Slab Module, Specific Heat, Structural Fire Design, Tensile Coupon Test, Thermal Conductivity, Thermal Elongation, Transient Plane Source Technique
Abstract: The mechanical and thermal properties of structural steel were examined at ambient and high temperature to evaluate the predictive models of current design codes. Tensile coupon tests were performed to evaluate the mechanical properties. Thermal elongation was determined using a high-temperature extensometer, while the thermal conductivity and specific heat capacity were determined using the transient plane source technique. Specifically, the slab method was used. The determined mechanical properties were used to develop predictive models for these properties at elevated temperatures and these models closely matched those within two current design codes. A similar model was also created based on the experimental results of the thermal conductivity testing. The results of the specific heat testing were also found to match very closely with the model presented in the design code.
Reference: Thin-Walled Structures, 98, Part A (2016) 154-168