Residual stress can lead to warpage of a 3D-printed part. Both Dynamic Mechanical and Thermomechanical Analysis are capable to estimate warpage. In this video, Dr. Natalie Rudolph explains, how the coefficient of thermal expansion (CTE), measured with Thermomechanical Analysis, can be used to predict and calculate warpage.
AutoEvaluation is an intelligent software algorithm and part of the NETZSCH Proteus® software, which automatically and autonomously evaluates thermo-analytical measurement curves. It has already been introduced and successfully applied for Differential Scanning Calorimetry and Thermogravimetric Analysis and is also available for dL signals as generated by dilatometers (DIL) and thermomechanical analyzers (TMA). As an improvement, the mean CTE (Coefficient of Thermal Expansion) values are evaluated additionally before and after the glass transition.
A way to reduce shrinkage and increase dimensional stability of polymers is the addition of inorganic fillers, for instance glass beads. Learn how to determinethermal expansion of 3D printed samples – both unfilled and filled with hollows glass beads.
The design of parts and components made of fiber-reinforced composites needs to take the coefficient of thermal expansion into account because it determines the extent to which a material changes its dimensions when heated or cooled. Thermomechanical Analysis is the perfect method to predict product performance and processing behavior. Read our contribution to the journal Kunststoffe International for an overview of applications.
Bei der Konstruktion von Bauteilen und Komponenten aus Faserverbundwerkstoffen muss der Wärmeausdehnungskoeffizient berücksichtigt werden, denn er bestimmt, wie stark sich ein Material bei Erwärmung oder Abkühlung in seinen Dimensionen verändert. Thermomechanische Analyse (TMA) ist die perfekte Methode für die Vorhersage der Produktleistung und des Verarbeitungsverhaltens. Lesen Sie unseren Beitrag in der Zeitschrift Kunststoffe!
The plastics used in Selective Laser Sintering (SLS) have a higher thermal expansion when compared with other materials. Therefore, it is important to know how the dimensions of an SLS part change at different temperatures during the build and during use. The higher the thermal expansion coefficient, the more prone are the parts to warpage or curling and the build-up of residual stresses. Learn more!
Fillers have long played an important role in the polymer manufacturing industry. An important property to measure how the filled material changes in length when being heated or cooled is the coefficient of thermal expansion. Knowledge about this material behavior is required to be able to determine important design values. Learn how the flow field and sample preparation influences the property and see how measurements with the TMA 402 F3 Hyperion® Polymer Edition are carried out.