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Time-dependent deformation behavior of PMMA

Bruker Nano Surfaces and Metrology
16 Jul 2023

This application note details the study carried out by Bruker on the time-dependent deformation behavior of polymethyl methacrylate (PMMA). Three different tests were performed to investigate the strain rate behavior of PMMA using a Hysitron® TI 950 TriboIndenter® equipped with nanoDMA III. These findings allow for the characterization of the PMMA strain rate dependence over four decades. While conducting controlled strain rate indentations combined with CMX loading, the best approach is to test the material at high strain rates, as small strain rates must be explored through reference creep testing.

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Hysitron TI 980

Bruker Nano Surfaces and Metrology

The Hysitron TI 980 nanoindenter achieves remarkable advances in control and throughput capabilities, testing flexibility, applicability, measurement reliability, and system modularity. This industry-leading system builds upon decades of Hysitron technological innovation to deliver new levels of extraordinary performance, enhanced capabilities, and ultimate versatility in nanomechanical characterization. 

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NanotechnologyNanotechnology, or nanotech, is an engineering technique using molecular scale functional systems. Applications of nanotechnology include medicine and medical devices, electronics, air and water purification, food science and energy production.TensiometersTensiometers include instruments designed to measure the surface tension of liquids and instruments for measuring soil water content. Features of tensiometers to consider include accuracy, speed, portability and reliability.Thermal Analysis EquipmentThermal analysis equipment is used for measuring heat flow, weight loss, dimension changes or thermomechanical properties and is important for analyzing a material’s performance and stability. Thermal analysis equipment includes differential scanning calorimeters (DSC), thermogravimetric analyzers (TGA), thermomechanical analyzers (TMA), dilatometers, thermometers, vapor sorption analyzers, boiling and melting point apparatus. Thermal analyzers can reveal properties such as melting, crystallization and glass transitions or other processes such as oxidation, decomposition, volatilization, as well as coefficients of thermal expansion and modulus. Find the best thermal analysis equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Mechanical TestingMechanical testing explores the elastic and inelastic nature of a material when force is applied. A mechanical test shows whether a material is suitable for its intended application by measuring hardness, tensile strength, elongation, elasticity, and fatigue limit.Non-Destructive TechniquesNon-destructive techniques (NDT) describes a variety of analytical techniques used to evaluate the properties of a material. Common methods include ultrasonic, magnetic-particle, liquid penetrant, radiographic, remote visual inspection (RVI), and eddy-current testing. NDT is regularly used in forensic engineering, civil engineering, mechanical engineering, electrical engineering, systems engineering, aeronautical engineering, and medicine.ProfilometersProfilometers are instruments used to measure a surface's profile, in order to quantify etch depth, deposited film thickness, and surface roughness. They operate in either contact or non-contact modes and may use optical or stylus techniques to make the actual measurements.Deformation behaviorCreep testing

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