Results 31 to 40 of about 29,466 (163)

Processing of a LLDPE/HDPE pressure vessel liner by rotomolding [PDF]

open access: yesMaterials Research, 2013
Biaxial rotational molding is a low-pressure process that uses a polymer powder to produce large and/or complex-shaped hollow thermoplastic goods using low cost molds, being very suitable for prototype production. In the present work, liner prototypes (F
E. S. Barboza Neto   +4 more
doaj   +1 more source

Polyethylene liner motion in dual-mobility hip prostheses: static and dynamic radiostereometry in 16 patients 1 year after operation

open access: yesActa Orthopaedica, 2022
Background and purpose: Dual-mobility hip arthroplasty utilizes a freely rotating polyethylene acetabular liner to protect against dislocation. As liner motion has not been confirmed in vivo, we undertook this using dynamic radiostereometry (RSA ...
Peter Bo Jørgensen   +4 more
doaj   +1 more source

Failure Analysis of ICE Cylinder Units and Technology for Their Elimination

open access: yesEng
The mechanisms of in-service damage caused to the cylinder units of internal combustion engines (ICE) during their operation are analyzed. Long-term operation under harsh conditions, failure to comply with operating conditions, and breach of design and ...
Volodymyr Dzyura   +5 more
doaj   +1 more source

Influence of Tungsten Powder Particle Grade on the Densityof the Liner of Perforating

open access: yesCejing jishu
To increase the penetration performance of perforating bullet, the powder particle grade technique is studied by increasing the density of tungsten powder liner.
WANG Yu   +6 more
doaj   +1 more source

Numerical Investigation on the Extrusion Process of Flexible Pipe Liners for Deep-Sea Mineral Transport

open access: yesJournal of Marine Science and Engineering
Flexible pipes have significant application potential in deep-sea mineral resource exploitation. As the innermost barrier of flexible pipes, the liner directly withstands abrasive wear from mineral particles.
Wanhai Xu   +4 more
doaj   +1 more source

The effect of three-layer liner on the jet formation and penetration capability of shaped charge jet

open access: yesScientific Reports, 2023
In order to solve the problem of insufficient penetration ability of common liner, a new three-layer liner was proposed. AUTODYN software was used to simulate the efflux forming process of three-layer liner.
Zhiwei Hao   +4 more
doaj   +1 more source

The AERO prosthetic liner: socket pressure distribution, comfort and material composition

open access: yesAnnals of Medicine
Purpose This study aimed to evaluate the pressure distribution and comfort of transtibial prosthesis wearers using an affordable ethyl-vinyl acetate (EVA) roll-on (AERO) liner.Method Fifteen unilateral transtibial prosthesis users wore patella tendon ...
Yusuke Miyata   +4 more
doaj   +1 more source

Directional rock blasting using shaped charges using combined charge liners with different shapes

open access: yesEnergy Science & Engineering, 2023
The shape of a charge liner used in shaped charges with a combined liner will greatly influence the blasting effect. In this study, we examined how combined charge liners with different shapes affected directional rock blasting, and we assessed the ...
Kaixin Liu   +5 more
doaj   +1 more source

Friction and wear characteristics of self-lubricating spherical bearings under different stresses

open access: yesJournal of Aeronautical Materials
In order to study the effect of stresses on the friction and wear properties of self-lubricating spherical plain bearings,the self-lubricating spherical bearings EN2584R12 was taken full life cycle tests under 50%,100% and 150% standard stresses ...
HUANG Xiongrong
doaj   +1 more source

Evaluation of marginal adaptation of a self-adhering flowable composite resin liner: A scanning electron microscopic study

open access: yesContemporary Clinical Dentistry, 2018
Background: “Self-adhering composite resins,” are claimed to eliminate the need for a separate acid etching and bonding agent application step, thus simplifying the direct restorative procedure, both regarding the technique sensitivity and the duration ...
Chava Gayatri   +5 more
doaj   +1 more source

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