Results 71 to 80 of about 106,445 (292)

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced 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

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

open access: yesAdvanced 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

Generalized Householder Transformations for the Complex Symmetric Eigenvalue Problem

open access: yes, 2013
We present an intuitive and scalable algorithm for the diagonalization of complex symmetric matrices, which arise from the projection of pseudo--Hermitian and complex scaled Hamiltonians onto a suitable basis set of "trial" states.
Jentschura, U. D.   +2 more
core   +1 more source

Nanoscale intermittent contact-scanning electrochemical microscopy [PDF]

open access: yes, 2013
A major theme in scanning electrochemical microscopy (SECM) is a methodology for nanoscale imaging with distance control and positional feedback of the tip.
Baghdadi, Marc   +4 more
core   +1 more source

Influence of grain size distribution on dynamic shear modulus of sands

open access: yesOpen Engineering, 2017
The paper presents the results of laboratory tests, that verify the correlation between the grain-size characteristics of non-cohesive soils and the value of the dynamic shear modulus.
Dyka Ireneusz   +2 more
doaj   +1 more source

Dynamic and static measurements of small strain moduli of toyoura sand

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2014
A series of triaxial tests were performed on specimens made of Toyoura sand having different dry densities. Very small unloading/ reloading cycles were applied to obtain “static” Young’s modulus.
Manuel Builes   +2 more
doaj   +1 more source

Employee attitudes as a mediator between HRM and organizational performance [PDF]

open access: yes, 2018
Attitude is a power that controls human behaviour. When employee Attitude is positive, it can give impact positive to organization performance. A proper human resource management (HRM) managed by organization, the employee attitude will be affected.
Ali Akeel, Mohamed Elfadeel   +2 more
core  

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Laboratory Investigation on the Stress-Dependent Anisotropic Shear Wave Velocity (Vs) and Coefficient of Lateral Earth Pressure at Rest (K0) of Granular Materials

open access: yesAdvances in Civil Engineering, 2021
The stress-dependent K0, Vs, and Vs anisotropy and their correlations with sand for 1D consolidation stress were tested with a custom-designed floating-wall consolidometer-type Bender Element (BE) testing apparatus.
Guangbo Du, Nina Liu, Zhao Xia, Xin Kang
doaj   +1 more source

Kesediaan pelajar terhadap kit 'Smart CCTV' bagi pelajar teknologi elektronik di Kolej Vokasional [PDF]

open access: yes, 2018
Penggunaan alat bahan bantu mengajar (ABBM) dalam pengajaran perlu dipelbagaikan bagi memudahkan dan membantu pelajar dari segi kefahaman yang mendalam dalam subjek yang dipelajarinya.Kajian ini ingin membangunkan satu produk Kit ‘Smart CCTV’ sebagai ...
Khalid, Noor Nadhirah
core  

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