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  • The Linux Ultra-DMA Mini-Howto: Introduction
    This document is intended to explain how to use Ultra-DMA aka Ultra-ATA aka Ultra33 and Ultra66 hard drives and interfaces with Linux. In many cases there is no difficulty in using them, but some tweaking can increase performance. In other cases, you need to go to extraordinary lengths simply
  • DMA Testing for Long Term Material Performance (.doc)
    DMA is short for Dynamic Mechanical Thermal Analysis (DMTA), which is another name for Dynamic Mechanical Rheological Testing (DMRT). Rheometers for mechanical rheometry are of two types: 1) Linear displacement, RSA II Rheometrics Solids Analyzer. 2) Rotational, SR5 Rheometrics Controlled Stress
  • Using DMA for Data Transfers without CPU Intervention Can Reduce Power and Extend System Battery Life
    The implementation of direct memory access (DMA) in 32-bit microcontrollers (MCUs) based on ARM (R) cores has limitations. Specifically, DMA does not support chaining (connecting a string of peripherals using DMA) or sequencing (executing specific steps in the chain of peripherals multiple times
  • Product Performance Using DMA and Rheology (.doc)
    Dynamic mechanical measurements of materials yield insight and intrinsic information more than any other single measurement. These tests can be accomplished for a wide range of temperatures from -150C to 600C. Testing liquids to solids and everything in between. Geometries include torsion, three
  • Characterizing Foam Hinged Lid Containers using DMA Testing (.pdf)
    The foam hinged lid container market continues to grow as more people order takeout food. Products from various manufacturers appear and feel the same or equivalent, but the performance is noticed by customers and the end user. Traditional test methods, like differential scanning calorimetry (DSC)
  • Predicting plastic part life
    Dynamic mechanical analysis helps designers build longer lasting products. Edited by Jean M. Hoffman DMA testing helps determine the effect of different curing conditions on thermoset polyester products. DMA demonstrates the degree of cure based on the stiffness and glass transition temperature
  • Dynamic Mechanical Analysis (.doc)
    The DMA determines changes in sample properties resulting from changes in five experimental variables: temperature, time, frequency, force, and strain. The deformation can be applied sinusoidally, in a constant, or under a fixed rate. The DMA uses samples that can be in bulk solid, film, fiber, gel
  • Automotive Fatigue Life and Dynamic Mechanical Analysis of a Matrix Polymer
    Bose with the need to assess fatigue response and also to perform a DMA assessment on their raw materials. The ElectroForce (R) 3330 test instrument with DMA (Dynamic Mechanical Analysis) software, in conjunction with WinTest (R) control software, was used to conduct these tests. The ElectroForce 3330

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