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Understanding Shrinkage and Warpage of Reinforced and Filled Thermoplastics
too often, shrinkage values listed on data sheets are thought to indicate probable warpage. This information typically derives from 5 in. X 0.5 in. X 0.125 in. rectangular bars measured in accordance with ASTM D955 test methods. These specimens, however, ignore the anisotropic shrinkage
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Making the strain
in the building of dynamically loaded structures can lead to cautious, overweight designs or premature structural failures. Conversely, more optimal designs are possible when they are based on loading and strain rates that better reflect actual operation conditions. High strain rates are generated
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Superstrong parts
material that ends up as scrap. With forgings, parts are shaped to size with minimal waste. Forging can also yield advantages in machining, lead time, and tool life. Savings come from forging to a closertofinish size than is feasible with alternate metal sources such as plate or bar. There's less
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Glossary of Forging Terms
to give the piece approximately the correct shape for subsequent forming. Billet A semifinished, cogged, hot-rolled, or continuous-cast metal product of uniform section, usually rectangular with radiused corners. Billets are relatively larger than bars. See Bloom. Bite Amount of the die
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New DPM Double Planetary Mixer - An Economical Alternative to Double-Arm Kneaders (.pdf)
support at the. lower end of the blades. These were the design goals that eventually lead to the HV Blade concept. Helical down thrust configuration - Unlike traditional, rectangular planetary blades, the HV Blade. is sloped in a precisely angled, helical contour. This sweeping curve firmly pushes
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Short, Sharp, Shock - Testing Materials at High Strain Rates
data may not produce accurate predictions at high strain rates, and the use of such data in the analysis and design of dynamically loaded structures can lead to cautious, overweight designs or premature structural failure. Therefore it is essential that the material’s deformation characteristics
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Magnesium
required than for other metals. Bending, blocking, and finishing are usually the only operations needed. Typical magnesium forgings are missile fuselage connector rings. Standard extruded shapes include round, square, rectangular, and hexagonal bars; angles, beams, and channels; and a variety of tubes
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Improved HCF Performance and FOD Tolerance of Surface Treated Ti-6-2-4-6 Compressor Blades (.pdf)
distributions, HCF. recognized2-5 to lead to enhanced fatigue. performance, and FOD tolerance of alloy Ti-6Al-. strength. For example, many engineering. 2Sn-4Zr-6Mo (Ti-6-2-4-6) are presented. The. components have been shot-peened or cold. compressive layer produced by LPB is shown to. worked