Results 111 to 120 of about 3,171 (198)

Optimal Composite Material for Low Cost Fabrication of Large Composite Aerospace Structures using NASA Resins or POSS Nanoparticle Modifications [PDF]

Thermoplastic laminates in situ consolidated via tape or tow placement require full mechanical properties. Realizing full properties requires resin crystallinity to be controlled - partial crystallinity leads to unacceptably low laminate compression ...
Gruber, Mark B., Jensen, Brian J., Lamontia, Mark A.   +2 more
core   +1 more source

Long discontinuous fiber composite structure: Forming and structural mechanics [PDF]

Cost effective composite structure has motivated the investigation of several new approaches to develop composite structure from innovative material forms.
Beaussart, A. J., Deheer, D. C., Okine, R. K., Otoole, B. J., Pipes, R. B., Santare, M. H.   +5 more
core   +1 more source

Sternal Reconstruction Utilizing a Custom 3D-Printed Polyetherketoneketone Implant

Annals of Thoracic Surgery Short Reports
Anterior chest wall reconstruction after sternal resection remains challenging. Implants and prosthetic reconstructive materials should offer ample tissue ingrowth, maintain structural integrity and physiology, minimize infection risk, and maximize ...
Eric Lisznyai, MD, Haroutioun Boyajian, MD, Ikenna Okereke, MD, Deangelo Ferguson, MD, Aamir Siddiqui, MD, Andrew M. Popoff, MD   +5 more
doaj   +1 more source

Vibro-Acoustic modulation based damage identification in a composite skin-stiffener structure [PDF]

, 2014
The vibro-acoustic modulation method is applied to a composite skin-stiffener structure to investigate the possibilities to utilise this method for damage identification in terms of detection, localisation and damage quantification.
Akkerman, R., Loendersloot, R., Ooijevaar, T.H., Rogge, M.D., Tinga, T.   +4 more
core   +3 more sources

Pixel Coloring modelling of PEKK crystallization

, 2019
Les propriétés de la matrice thermoplastique dépendent fortement de la morphologie cristalline formée durant le refroi-dissement. Afin de prévoir la taille des entités cristallines, d’évaluer l’impact de la formation d’une phase transcristallineautour des fibres, et de faire le lien entre cinétique de cristallisation et la morphologie, une approche de ...
Chelaghma, Saber, Passieux, Jean-Charles, de Almeida, Olivier, Périé, Jean-Noël, Marguerès, Philippe, Vinet, Alain   +5 more
openaire   +1 more source

A study of thermal transitions in a new semicrystalline thermoplastic polyimide [PDF]

A polyimide derive from 4,4'-isophthaloyl diphthalic anhydride (IDPA) and 1,3-bis (4-aminophenoxy 4'-benzoyl) benzene (1,3-BABB) having semicrystalline behavior was prepared and characterized by differential scanning calorimetry (DSC) and wide angle X ...
Gautreaux, Carol R., Gerber, Margaret K., Pratt, J. Richard, St.clair, Terry L.   +3 more
core   +1 more source

Use of high-performance polymeric materials in customized low-cost robotic grippers for biomechatronic applications: experimental and analytical research

Frontiers in Materials
Advancements in materials science and 3D printing technologies have opened up new avenues for developing low-cost robotic grippers with high-performance capabilities, making them suitable for various biomechatronic applications.
Răzvan Ioan Păcurar, Filippo Sanfilippo, Martin Bjaadal Økter, Diana-Irinel Băilă, Cătălin Zaharia, Adrian Ionuţ Nicoară, Ionuț Cristian Radu, Tom Savu, Filip Górski, Wiesław Kuczko, Radosław Wichniarek, Dan Sorin Comşa, Martin Zelenay, Paweł Woźniak   +13 more
doaj   +1 more source

Biomechanical behavior of implant retained prostheses in the posterior maxilla using different materials: a finite element study

BMC Oral Health
Background The aim of this study is to evaluate the biomechanical behavior of the mesial and distal off-axial extensions of implant-retained prostheses in the posterior maxilla with different prosthetic materials using finite element analysis (FEA ...
Ahmad Aboelfadl, Ludger Keilig, Kamal Ebeid, Mohamed Abdel Moniem Ahmed, Ingy Nouh, Ashraf Refaie, Christoph Bourauel   +6 more
doaj   +1 more source

Predicting impact damage, residual strength and crashworthiness of composite structures [PDF]

, 2016
Falzon, Brian, Tan, Wei
core   +1 more source

On Carmichael and polygonal numbers, Bernoulli polynomials, and sums of base-$p$ digits

, 2019
We give a new characterization of the set $\mathcal{C}$ of Carmichael numbers in the context of $p$-adic theory, independently of the classical results of Korselt and Carmichael.
Kellner, Bernd C., Sondow, Jonathan
core