Results 81 to 90 of about 33,952 (298)
Evidence for a bound on the lifetime of de Sitter space
, 2008 Recent work has suggested a surprising new upper bound on the lifetime of de Sitter vacua in string theory. The bound is parametrically longer than the Hubble time but parametrically shorter than the recurrence time.
A. Aguirre +26 more
core +1 more source
A New Tension-Meter for Warp on Looms
Journal of the Textile Machinary Society, 1957 研究目的織機または経編機におけるごとく糸の両端が固定し, 静止状態にある場合に簡易に張力を測定せんとする張力計を試作せんとする.研究結果(1) 編織のために準備された糸 (糊付糸, 撚糸あるいは原糸のままの糸) はその受けるひずみの範囲内では荷重一伸長曲線は大体直線をなす.(2) この線図に基き糸に応ずる適当なる外力を加えて張力の変化を読み外力を加えない時, すなわち仕掛り糸の張力を見出した.
S. Kakiage, E. Shimizu
openaire +2 more sources
Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
The Effect of Pre-Tension on Deformation Behaviour of Natural Fabric Reinforced Composite
Medžiagotyra, 2011 In the fiber-reinforced composites industry together with the promotion of environmental friendly production, synthetic materials are attempted to be replaced by renewable, biodegradable and recyclable materials.
Paulė BEKAMPIENĖ +2 more
doaj +1 more source
Journal of Architecture, Art & Humanistic Science, 2020 Woven fabric structures have, on account of the manufacturing process, a characteristic waviness of the fabric threads are not uniform, weft and warp threads are curved depending on the weave type, weaving process, coating process and the tension rate ...
Ahmed Ramadan El Tantawy
doaj +1 more source
Process analysis and outlook for the development of a new weft yarn inlay system for warp knitting
Journal of Engineered Fibers and Fabrics, 2022 The technology of warp knitting is one of the more recently developed processes in knitting technology. Complex machine technology and highly productive machines characterize the process.
Thomas Mutschler +2 more
doaj +1 more source
Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann +3 more
wiley +1 more source
Journal of Natural FibersThis research examines screening of the factors affecting cotton-sized yarn gain strength, elongation, stretch, size pick-up, and yarn abrasion resistance.
Andinet Habtamu, Million Ayele
doaj +1 more source
Simulation of Strength of C/C Woven Composite Open-hole Plate byFinite Element Method
Hangkong gongcheng jinzhan, 2019 3D woven composites have been widely used in aerospace field. It is of great engineering value to study the damage mechanism of C/C woven composites with openings under tension and compression.
Liang Heng, Wang Yuqing, Tong Mingbo
doaj +1 more source
Antibacterial easy adjustable woven compression bandage for venous leg ulcers
Journal of Industrial Textiles, 2022 The proposed study aims in first part to discuss the structure and behavior of short-stretch cotton woven compression bandage (WCB), and in second part the production and properties of multifunctional WCB.
Abdelhamid R Aboalasaad +6 more
doaj +1 more source