Dynamic Mechanical Analysis Research Papers (original) (raw)

9 Followers

Recent papers in Dynamic Mechanical Analysis

Top Papers
Most Cited Papers
Most Downloaded Papers
Newest Papers
People
- by Angelo Ferrando
- •
- Engineering, Materials Science, Impact Analysis, Polymer
- by Witold Brostow
- •
- Engineering, Materials Science, Materials, Surface modification
- by Silvina Cerveny
- •
- Engineering, Polymer, Differential scanning calorimetry, CHEMICAL SCIENCES
- by Konrad Knoll
- •
- Materials Engineering, Mechanical Engineering, Materials Science, Kinetics
- by Hatsuo Ishida
- •
- Engineering, Materials Engineering, CHEMICAL SCIENCES, Dynamic Mechanical Analysis
- by Marcelo Oliveira
- •
- Engineering, Biomaterials, Kinetics, Scanning Electron Microscopy
- by Min Aung
- •
- Polyethylene, Materials Design, Thermal Analysis, Crude Palm Oil
- by Kaiyang Zeng
- •
- Engineering, Nanoindentation, Small Angle X Ray Scattering, Morphology

The viscoelastic response of commercial Al–Zn–Mg and Al–Cu–Mg alloys was measured with a dynamic-mechanical analyzer (DMA) as a function of the temperature (from 30 to 425°C) and the loading frequency (from 0.01 to 150 Hz). The time-temperature superposition (TTS) principle has proven to be useful in studying mechanical relaxations and obtaining master curves for amorphous materials. In this work, the TTS principle is applied to the measured viscoelastic data (i.e., the storage and loss moduli) to obtain the corresponding master curves and to analyze the mechanical relaxations responsible for the viscoelastic behavior of the studied alloys. For the storage modulus it was possible to identify a master curve for a low-temperature region (from room temperature to 150°C) and, for the storage and loss moduli, another master curve for a high-temperature region (from 320 to 375°C). These temperature regions are coincidental with the stable intervals where no phase transformations occur. Th...

- by Daniel Crespo
- •
- Engineering, Materials Science, Microstructure, Viscoelasticity
- by Lucas Santos
- •
- Materials Engineering, Mechanical Engineering, Chemical Engineering, Adhesion
- by Marcelo Oliveira
- •
- Engineering, Biomaterials, Kinetics, Scanning Electron Microscopy
- by Luca Fambri
- •
- Materials Engineering, Silk fibroin protein, Dynamic Mechanical Analysis
- by bo duan
- •
- Engineering, Scanning Electron Microscopy, Polymer, Pore Size
- by D. Hourston
- •
- Engineering, Polymer Blends, Polymer, CHEMICAL SCIENCES
- by asit samui
- •
- Engineering, Polymer, Differential scanning calorimetry, Optical microscopy
- by Marinella Levi
- •
- Materials Engineering, Chemical Engineering, Stress relaxation, Glass Transition

The effect of the thickness on the mechanical properties of injection-molded specimens of pure polyamide-6 (PA6) and polyamide-6 clay nanocomposites (PA6-NC) with 5wt% of layered silicates was investigated. Plates of 0.5, 0.75, 1 and 2mm thickness were characterized in the injection direction using Dynamic Mechanical Analysis under torsion and tension respectively, and tensile tests. The fracture surfaces were analyzed by

- by Volker Altstädt
- •
- Engineering, Scanning Electron Microscopy, Polymer, Injection Molding
- by Daniel Ballesteros
- •
- Plant Biology, Engineering Design, Plant Science, Structural Stability
- by J. Dandurand
- •
- Materials Engineering, Mechanical Engineering, Biomedical Engineering, Polymers
- by Clive Siviour
- •
- Engineering, Strain Rate, Polymer, High strain rate testing
- by Andy Harland
- •
- Engineering, Materials Science, Finite Element, Composite Material
- by Nara Altmann and +1
- •
- Engineering, Polymer science, TIME, Polymer
- by Tolibjon Omonov
- •
- Engineering, Viscoelasticity, Polymer Blends, Low Frequency
- by praveen M
- •
- Engineering, Atomic Force Microscopy, bisphenol A, Composite Material

The thermal lag associated with the temperature ramping experiment in a dynamic mechanical analysis is demonstrated on carbon black filled vulcanised rubber samples by using a DMTA MkIII from Rheometric Scientific. The importance of achieving thermal equilibrium on the sample before starting the measurement is emphasised. By running a combination of isothermal and ramping steps, the impact of thermal lag

- by Ivan Chodák
- •
- Materials Engineering, Mechanical Engineering, Heat Transfer, Rubber
- by suresh narine
- •
- Chemical Engineering, Foam, Weight Loss, Soybean
- by Giancarlo Galli and +1
- •
- Engineering, X Rays, Polymer, Transport Properties
- by Gordon Airey
- •
- Mechanical Engineering, Chemical Engineering, Rheology, Fuel

In this study the use of dynamic mechanical analysis (DMA) for the mechanical characterisation of pharmaceutical hydrogels was evaluated. DMA was used in two different modes, the "controlled force" and the "multi-strain" (MS). The results obtained on dextran methacrylate hydrogels of various compositions were compared to those obtained using an oscillatory shear rheometer. The best agreement was found between the MS-DMA and the rheometer results. The moduli measured in MS-DMA were extrapolated towards zero compression to obtain the modulus of the hydrogels. This procedure resulted in good agreement with the data obtained with the rheometer. Hydrogels were analysed after swelling to equilibrium with both methods, DMA and rheology. A scaling between the elastic modulus (G') and the equilibrium swollen polymer volume fraction (v(2,s)) could be found, although the best correlation between G' and v(2,s) was obtained with the rheometer.

- by Mies Van Steenbergen
- •
- Pharmaceutical Technology, Hydrogels, Pharmaceutics, Elastic Modulus
- by Suprakas Sinha Ray
- •
- Engineering, Atomic Force Microscopy, bisphenol A, Composite Material
- by Vinay Sharma
- •
- Engineering, Collagen Cross-linking, Polymerization, Raw materials
- by Prof S.H. Masood
- •
- Rapid Prototyping, Copper, Iron, Composite Material
- by Salvador Naya and +1
- •
- Materials Engineering, Mechanical Engineering, Glass Transition Temperature, Polymer Testing

Composite films of Polyamide-6,6 (PA66) and multi-walled carbon nanotubes (MWCNTs) were prepared by a combination of solution casting followed by compression molding techniques. Both unfunctionalized (u-MWCNTs) and functionalized nanotubes (f-MWCNTs) were used in this study. The functionalization involved direct solvent-free amination of MWCNTs with hexamethylenediamine. Thermogravimetric analysis was used to observe the changes in the nanotubes upon functionalization and morphological features of the resulting composite films were studied using scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. The crystallinity changes by incorporation of the u-MWCNTs and f-MWCNTs in the PA66 matrix were studied by wide angle X-ray scattering and differential scanning calorimetry. The f-MWCNT/PA66 film showed an improvement of ∼43% in maximum tensile stress (MTS) and ∼32% in Young’s modulus over pristine PA66 film, while at a similar loading of 0.5 wt%, the f-MWCNT/PA66 film showed ∼15% increase in MTS and ∼16% increase in modulus over the u-MWCNT/PA66 film. Dynamic mechanical analysis indicated significant difference in the small-strain mechanical properties between the MWCNT-filled and unfilled PA66 at the very low MWNT loadings that were tested and supported the tensile results. The water absorption trend of the composite films showed dramatic improvement over the neat film.

- by Sunil Sabharwal
- •
- Engineering, Materials Science, Materials, Scanning Electron Microscopy
- by Bei Wang and +1
- •
- Engineering, Scanning Electron Microscopy, Transmission Electron Microscopy, Nanofiber
- by Derrick Dean
- •
- Engineering, Manufacturing, Raman Spectroscopy, Carbon Nanotubes
- by SUNIL KUTTY
- •
- Engineering, Materials Engineering, Chemical Engineering, Natural rubber
- by Nektaria Barkoula
- •
- Materials Engineering, Kinetics, Elastomers, Silica
- by praveen m
- •
- Engineering, Atomic Force Microscopy, bisphenol A, Composite Material
- by ravindra sahu
- •
- Materials Engineering, Mechanical Engineering, Activation Energy, Contact angle
- by Mircea A L E X A N D R U Mateescu and +1
- •
- Engineering, Membranes, Advanced Functional Materials, Physical sciences

Dynamic Mechanical Analysis Research Papers (original) (raw)

Log In