Results 1 to 10 of about 2,638,774 (206)

Polyurethane foam behaviour during impact [PDF]

open access: yesMATEC Web of Conferences, 2018
This contribution is focused on the passive safety of the railway vehicles interiors. The passive safety has become a new area of the rail vehicles design.
Špirk Stanislav   +2 more
doaj   +2 more sources

Impact behaviour of concrete beams

open access: yesGrađevinar, 2014
The determination of behaviour of structural members under load has become increasingly prominent with current advances in technology. The effect of impact on solids should not be ignored.
R. Tugrul Erdem   +3 more
doaj   +2 more sources

Impact behaviour and fractography of 6061 alloy with trace addition of Sn

open access: yesFracture and Structural Integrity, 2022
The impact behaviour of 6061 alloy with trace amount of 0, 0.04, and 0.08 wt.% Sn was studied in the as-cast (AC), as-roll (AR) and peak-age roll (PAR) processing state. Additionally, the fracture mechanism was also studied in the AC and PAR state.
Monoj Baruah, Anil Borah
doaj   +5 more sources

Impactor Diameter and Ply Number Effects on the Impact Behavior of Carbon Fiber Composite Laminates

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2022
As it is known, impact damage is a major mechanical phenomena for composite materials especially used in the aerospace structures. The factors affecting the impact behaviour of the composites depend on the impactor systems as well as the target material.
Mehmet İskender ÖZSOY
doaj   +1 more source

Effect of Unit-Cell Size on the Barely Visible Impact Damage in Woven Composites

open access: yesApplied Sciences, 2021
The effect of the weaving architecture and the z-binding yarns, for 2D and 3D woven composites on the low-velocity impact resistance of carbon fibre reinforced composites, is investigated and benchmarked against noncrimp fabric (NCF). Four architectures,
Hassan M. El-Dessouky   +3 more
doaj   +1 more source

Low velocity impact response and post impact compression behaviour of ESTM-fabric/3266 composites

open access: yesCailiao gongcheng, 2020
A novel kind of lattice-distributed ESTM-fabrics (ES-L) and random-distributed ESTM-fabrics (ES-R) were developed by using polyethersulfone (PES) and U3160 according to ex-situ toughening technology.
DONG Hui-min   +5 more
doaj   +1 more source

Cough symptom severity in patients with refractory or unexplained chronic cough: a systematic survey and conceptual framework

open access: yesEuropean Respiratory Review, 2021
Background Cough severity represents an important subjective endpoint in assessing the effectiveness of therapies for patients with chronic cough. Although cough-specific quality of life questionnaires exist, a widely available cough severity instrument ...
Elena Kum   +10 more
doaj   +1 more source

Effects of Intrinsic Mechanical Characteristics of Lignocellulosic Fibres on the Energy Absorption and Impact Rupture Stress of Low Density Polyethylene Biocomposites

open access: yesInternational Journal of Sustainable Engineering, 2021
Proper assessments of the role of various natural fibres in green composites are very significant to predict their behaviour in different conditions leading to optimise the use of green composites in more functional green products.
Faris M. AL-Oqla
doaj   +1 more source

Impact behaviour of pressurised pipelines [PDF]

open access: yesWIT Transactions on The Built Environment, 2008
Experimental tests are reported on steel pipelines that have been struck by a relatively large rigid wedge-shaped mass travelling up to 10.4 m/s. A pipeline is supported across a span, is fully clamped at both ends and is struck at the mid-span and at the one quarter span positions. Most of the pipelines are pressurised with a nitrogen gas. The initial
N. Jones, R. S. Birch
openaire   +1 more source

Gestational weight gain outside the 2009 Institute of Medicine recommendations: novel psychological and behavioural factors associated with inadequate or excess weight gain in a prospective cohort study

open access: yesBMC Pregnancy and Childbirth, 2021
Background Previous studies have noted traditional physical, demographic, and obstetrical predictors of inadequate or excess gestational weight gain, but the roles of psychological and behavioral factors are not well established.
Yu Yang Feng   +9 more
doaj   +1 more source

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