Aim: The aim of the study is to find out difference between shear bond strength values and failure pattern metal ceramic system zirconia core veneering system. Materials methods: A was conducted total 30 samples were divided into three groups. first group contains core(Ni-Cr base metal-10nos), second zirconia- Upcera (10 nos) third Zirconia- Amman Girrbach (10nos). All cores layered with corres...

The main aim of this work is to analyse the quasi-static and dynamic response deformation behaviour polymeric auxetic structures manufactured with an SLA (stereolitography) additive manufacturing technique. To end, different experimental tests were performed using a universal servo-hydraulic instron machine Split Hopkinson Pressure Bar (SHPB). study focuses on understanding mechanical metamater...

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The forces required to puncture intact lettuce (Lactuca sativa) seed and pericarp, endosperm and embryo were measured by the Instron Universal Testing Machine. It required about 0.6 newton to puncture the endosperm in seeds imbibed in the dark at 6, 12 and 24 hours. Endosperm of seeds imbibed in the light or in dark with gibberellic acid required about 4.2 newtons at 6 and at 12 hours and only ...

AIM This study has compared the Shear Bond Strengths (SBSs) of ceramic brackets and metal brackets. MATERIALS AND METHOD Forty freshly extracted, human maxillary first premolars were selected for bonding. They were equally bonded with ceramic brackets (Transcend series 6000) and metal brackets (Mini Dynalock Straight wire brackets). A no - mix orthodontic adhesive system was used. Their shear...

An assessment of the material properties of three types of touch and close fasteners (Velcro) in general orthopaedic usage is presented. The materials were tested under various loading regimes using an Instron testing machine. The force-extension curves were analyzed and values determined for both the stiffness and strength of the various attachments. Particular reference was made to the altera...

In this work, the laboratory-made handsheets having different grammages were obtained at certain production conditions. The tensile characteristics of analysed by using two measuring techniques. main method for determining behaviour was performed on universal testing machine, which is a generally accepted conventional machine. A rheometer device used as second and alternative properties handshe...

A down-sized high-pressure torsion device is developed to be used in an INSTRON deformation machine available at the High Energy Materials Science beamline PETRA III. This setup allows obtain synchrotron diffraction patterns situ during severe plastic straining. Two different materials are studied: pure Ni, dislocation density and coherently scattering domain size analyzed; NiTi shape memory al...

AIMS The aim was to evaluate the incidence of root fracture of endodontically treated teeth reinforced with glass-fiber posts and metal posts luted with different luting cements. MATERIALS AND METHODS Forty maxillary central incisors were sectioned at 1 mm of the cementoenamel junction and endodontically treated. The teeth were divided into four groups (n = 10) and restored with prefabricated...