Results 81 to 90 of about 9,255 (216)

An analytical and experimental study of crack extension in center-notched composites [PDF]

The normal stress ratio theory for crack extension in anisotropic materials is studied analytically and experimentally. The theory is applied within a microscopic-level analysis of a single center notch of arbitrary orientation in a unidirectional ...
Beuth, Jack L., Jr., Herakovich, Carl T.
core   +1 more source

Filling a Gap in Materials Mechanics: Nanoindentation at High Constant Strain Rates up to 105 s−1

Small, EarlyView.
A piezoelectric nanoindentation platform enables constant strain‐rate testing up to 105 s−1, extending experimental capabilities to extreme deformation regimes. Distinct hardness upturns are revealed across crystalline and amorphous materials, verified as intrinsic responses through quasi‐static reloading.
Lalith Kumar Bhaskar, Dipali Sonawane, Hendrik Holz, Jeongin Paeng, Peter Schweizer, Jing Rao, Bárbara Bellón, Damian Frey, Aloshious Lambai, Laszlo Pethö, Johann Michler, Jakob Schwiedrzik, Gaurav Mohanty, Gerhard Dehm, Rajaprakash Ramachandramoorthy   +14 more
wiley   +1 more source

About the Ageing‐Induced Modifications of Physical‐Chemical and Electrical Properties of Polyimide (PMDA‐ODA) Under Gamma Radiation and High Temperatures

High Voltage, EarlyView.
ABSTRACT This study investigates the effects of radiation‐induced ageing on the physical, chemical, mechanical and electrical properties of Poly[4,4′‐oxydiphenylene‐ pyromellitimide] (PMDA‐ODA) polyimide, a high‐performance insulation material widely used in aerospace applications.
Simone Vincenzo Suraci, Jizhu Jin, Davide Mazza, Davide Fabiani   +3 more
wiley   +1 more source

Residual Cement Excess of Composite Versus Glass Ionomer Cement in Implant‐Supported Single Crowns After Different Intraoral Exposure Times—A Randomized Controlled Clinical Trial

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objective To evaluate the frequency and quantity of residual cement after cementation of monolithic zirconia crowns with glass ionomer or resin composite cement on customized ceramic abutments, following different intraoral retention times. The influence of margin location, quadrant and implant region was also assessed.
Maria Weinreuter, Kevin Richter, Thomas Stober, Peter Rammelsberg, Stefanie Kappel   +4 more
wiley   +1 more source

Adhesion of Newly Developed Composite Resin Splinting Materials to Enamel: Effect of Enamel Surface Treatment

Dental Traumatology, EarlyView.
ABSTRACT Background/Aim To evaluate the shear bond strength (SBS) of newly developed composite resin materials intended for dental splinting to enamel and to determine whether phosphoric acid etching alone provides reliable adhesion. Material and Methods Four experimental materials (G‐Fix, Light Fix, Ortho Connect, and Ortho Connect Flow) were compared
Wonkyu Shin, Ji‐Soo Song, Hyuntae Kim, Wonjoon Moon, Teo Jeon Shin, Shin Hye Chung, Jin‐Soo Ahn, Hong‐Keun Hyun   +7 more
wiley   +1 more source

Fatigue behaviour of root filled teeth: The role of endodontic sealers and restorative techniques

European Journal of Oral Sciences, EarlyView.
Abstract This in vitro study aimed to evaluate the fatigue behaviour of root canal treated teeth, filled with either AH Plus Jet (AHP) or AH Plus Bioceramic Sealer (AHPB) and rehabilitated with either mesio‐occlusal‐distal (MOD) restorations (direct resin composite) or endocrowns (indirect resin composite).
Andressa Weber Vargas, Rafaela Oliveira Pilecco, Pablo Machado Soares, Êmile de Moraes, Gabriel Kalil Rocha Pereira, Renata Dornelles Morgental   +5 more
wiley   +1 more source

Life prediction and constitutive models for engine hot section anisotropic materials program [PDF]

The purpose is to develop life prediction models for coated anisotropic materials used in gas temperature airfoils. Two single crystal alloys and two coatings are now being tested.
Swanson, G. A.
core   +1 more source

Eight‐Year Clinical Performance of Cantilevered Zirconia Resin‐Bonded Fixed Dental Prostheses: A Randomized Controlled Trial Evaluating the Effect of Nanostructured Alumina Coating

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To evaluate the clinical performance of cantilevered zirconia resin‐bonded fixed dental prostheses (RBFDPs) pretreated with nanostructured alumina coating (NAC) as a non‐invasive surface modification alternative to airborne‐particle abrasion (APA).
Tine Malgaj, Andraž Kocjan, Mutlu Özcan, Peter Jevnikar   +3 more
wiley   +1 more source

Influence of Airborne‐Particle Abrasion and Thermal Cycling on Enamel Bond Strength and Roughness of Lithium Disilicate Treated With a Self‐Etching Ceramic Primer

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This in vitro study investigated the effect of a self‐etching ceramic primer (Monobond Etch & Prime [MEP]), with or without aluminum oxide airborne‐particle abrasion, on the surface roughness, and microtensile bond strength (μTBS) of lithium disilicate bonded to enamel, compared with the conventional hydrofluoric acid plus silane (HF 
Gabriel Freitas Pereira, Maudiela Isabel Arita Torres, Nicole Escórcio de Meneses, Ana Carolina Lima Moreira, Raniel Fernandes Peixoto   +4 more
wiley   +1 more source

Effect of surface treatments on the bond strength between additively manufactured or injection‐molded high‐performance polymers and titanium

Journal of Prosthodontics, EarlyView.
Abstract Purpose To investigate the effect of surface treatment and fabrication techniques of high‐performance polymers on their shear bond strength (SBS) to grade IV titanium. Materials and Methods A total of 120 pre‐milled titanium abutments were sectioned.
Ahmet Serkan Küçükekenci, Doğu Ömür Dede, Oğuz Süleyman Özdemir, Burak Yilmaz   +3 more
wiley   +1 more source