Temperature Rise of an Adhesive Particle-Reinforced Polymer during Fatigue Testing

Area of Science:

• Materials Science
• Polymer Engineering
• Mechanical Engineering

Background:

• Construction adhesives are modified polymers designed for diverse loading conditions.
• Understanding adhesive behavior under cyclic stress is crucial for structural integrity.
• Previous research has not fully explored the thermal response of adhesives during fatigue loading.

Purpose of the Study:

• To investigate the impact of fatigue loading on the temperature of modified construction adhesives.
• To compare the effectiveness of thermal imaging cameras versus thermoelectric thermometers in monitoring adhesive temperature during fatigue tests.
• To analyze the influence of loading frequency on adhesive temperature changes.

Main Methods:

• Physically modifying basic adhesive compositions.
• Subjecting modified adhesives to fatigue loading at frequencies of 20 Hz and 30 Hz.
• Recording material temperatures using a thermal imaging camera and a thermoelectric thermometer.

Main Results:

• Fatigue loading consistently increased the temperature of all tested polymeric adhesives.
• At 20 Hz, higher load cycles correlated with increased sample temperature.
• At 30 Hz, temperatures initially rose then decreased, as observed via thermal imaging.
• Thermal imaging provided a more practical and informative method for identifying high-temperature areas compared to thermocouples.

Conclusions:

• Fatigue loading induces a measurable temperature increase in construction adhesives.
• Thermal imaging cameras are superior to thermocouple thermometers for practical, real-time monitoring of adhesive temperature during fatigue testing.
• Loading frequency influences the thermal response of modified adhesives under cyclic stress.