Material Science in Additive Manufacturing: Estimating Residual Stresses in PBF Parts Using Dynamic Mechanical Analysis

This week’s topic: Estimating Residual Stresses in PBF Parts using DMA

We use Dynamic Mechanical Analysis (DMA) to measure the temperature-dependent viscoelastic properties of a material and determine its modulus of elasticity and damping values by applying an oscillating force to the sample. 

Learn about:

• What is happening in a process when a material starts to cool and solidify
• Imbalanced shrinkage and warpage behavior of plastic parts
• The effect of modulus in the selective laser SinteringSintering is a production process for forming a mechanically strong body out of a ceramic or metallic powder. sintering (SLS) process
• Using the DMA 242 E Artemis® to deform a sample and find out how it reacts regarding temperature-dependent modulus, Glass Transition TemperatureThe glass transition is one of the most important properties of amorphous and semi-crystalline materials, e.g., inorganic glasses, amorphous metals, polymers, pharmaceuticals and food ingredients, etc., and describes the temperature region where the mechanical properties of the materials change from hard and brittle to more soft, deformable or rubbery.glass transition, Thermal StabilityA material is thermally stable if it does not decompose under the influence of temperature. One way to determine the thermal stability of a substance is to use a TGA (thermogravimetric analyzer). thermal stability, effect of fillers, mechanical response below 0° C and many more