*  Iranian Journal of Orthodontics - Evaluation of Etching Time and Concentration on Shear Bond Strength of Metallic Brackets...
Failure of resin bond due to excessive force is a major drawback of fixed orthodontic appliances requiring composite for bonding of brackets. Application of a composite resin with optimal mechanical properties and sufficiently high bond strength would be beneficial for this purpose. Several laboratory tests are commonly used to evaluate the bonding performance of adhesives, such as tensile and shear bond strength tests. In the present study, shear bond strength was tested which is a very popular method with acceptable reproducibility. This method has high similarity with clinical situations and it seems that mastication forces probably insert higher force on brackets (27, 28). The oral cavity cannot be simulated completely using laboratory and experimental methods due to its multifactorial character. Some researchers have shown that after inserting thermocycling, the strength of adhesive dental materials is negatively influenced (29, 30). In the present study, all the samples were exposed to ...
*  China Amino Vinyl Epoxy Octyl Functional Silane Coupling Agent (product list) - China Silane, Silane Coupling Agent
China Amino Vinyl Epoxy Octyl Functional Silane Coupling Agent (product list), Find details about China Silane, Silane Coupling Agent from Amino Vinyl Epoxy Octyl Functional Silane Coupling Agent (product list) - Anhui Elite Industrial Co., Ltd.
*  The Journal of Adhesive Dentistry
Materials and Methods: Buccal enamel of 80 bovine teeth was submitted to finishing and polishing with metallographic paper to a refinement of #600, in order to obtain a 5-mm2 flat area. Blocks (2 x 4 x 4 mm) of laboratory composite resin were cemented to enamel according to different protocols: (1) untreated enamel + RelyX Unicem cement (RX group); (2) untreated enamel + Bifix SE cement (BF group); (3) enamel acid etching and application of resin adhesive Single Bond + RelyX Unicem (RXA group); (4) enamel acid etching and application of resin adhesive Solobond M + Bifix SE (BFA group). After 7 days of storage in distillated water at 37°C, the blocks were sectioned for obtaining microbar specimens with an adhesive area of 1 mm2 (n = 120). Specimens were submitted to the microtensile bond strength test at a crosshead speed of 0.5 mm/min. The results (in MPa) were analyzed statistically by ANOVA and Tukey's test ...
*  Shear bond strengths (MPa) of the groups. Results prese | Open-i
Shear bond strengths (MPa) of the groups. Results presented as boxplots. Horizontal line in middle of each boxplot shows median value; horizontal lines in box i
*  Limitations of Push-out Test in Bond Strength Measurement.
The push-out test has been widely performed to measure the bond strength of intracanal materials in dentistry. However, it is difficult to compare equitably the bond strengths from different testing specimens. The aim of this study was to investigate
*  Peak principal stresses as a function of the degree of | Open-i
Peak principal stresses as a function of the degree of stenosis. All simulations were performed using a fixed degree of stenosis of 70% and at 160 mmHg blood pr
*  OSA | A Proposal of Photoelastic Stress Multiplier
A photoelastic stress multiplier is proposed which can perform the multiplication of two stresses or voltages using two cascaded photoelastic modulators. This new multiplier has potential applications in many interdisciplinary fields.. © 2006 Optical Society of America. PDF Article ...
*  RelyX™ Unicem Self-Adhesive Universal Resin Cement, Aplicap™ Refill Assortment Pack - RelyX™ Unicem Self-Adhesive Universal...
Attention: Either you have JavaScript disabled or your browser does not support JavaScript. To work properly, this site requires that you enable JavaScript.. ...
*  Effect of fibre on shear strength of residue from mechanical-biological pretreatment of waste on Environmental XPRT
Article Effect of fibre on shear strength of residue from mechanical-biological pretreatment of waste. Fibres in the waste have a strong influence on shear strength. This is because even though the waste is characterised as a coarse material with a n...
*  JAD: Volume 9, Issue 2 (March/April 2007)
7 . Adhesion Between Fiber Posts and Resin Luting Agents: A Microtensile Bond Strength Test and an SEM Investigation Following Different Treatments of the Post Surface ...
*  The Use of Crosshead Displacement in Determining Fracture Parameters | Volume 3: Materials Technology; Ocean Space Utilization ...
In determining the fracture toughness of a test specimen, standards currently require either locally-measured load-line displacements or clip gage displacements. In order to measure these parameters, secondary sensors generally need to be installed and calibrated, which often comes at a higher cost. As crosshead displacements are automatically measured in most modern material test machines, use of the crosshead measurements alone would be less expensive. Although much criticism exists on the accuracy of this approach in determining CTOD values, the method can still prove sufficiently accurate for many applications. The current paper aims to assess the magnitude of the errors that arise from using the crosshead displacement in fracture mechanics testing of steels with the Single Edge Notched Bending (SENB) specimen geometry. The results show that for steels with sufficiently large toughness, the use of the crosshead displacement to calculate J and convert to CTOD produces results within 10% of ...
*  China Supplier Servo Tensile Strength Test Machine - China Tensile Testing Machine, Tensile Strength Tester
China Supplier Servo Tensile Strength Test Machine, Find details about China Tensile Testing Machine, Tensile Strength Tester from China Supplier Servo Tensile Strength Test Machine - Hangzhou Pnshar Technology Co., Ltd.
*  Keratin Straightening Rebonding System<...
Кератинова трайно изправяща терапия - KERATIN STRAIGHTENING REBONDING SYSTEM KERATIN STRAIGHTENING REBONDING SYSTEM - Кератинова трайно изправяща терапия
*  Shelter colostomy resin adhesive 2245/19 19mm Clear(CSB) | LloydsPharmacy
Great price on Shelter colostomy resin adhesive 2245/19 19mm Clear(CSB). FREE delivery options available. Trusted service, convenient and safe shopping online
*  Shelter ileostomy resin adhesive 3245/58 58mm Beige(CSB) | LloydsPharmacy
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*  Ansys tutorial -- CFD Online Discussion Forums
Hello, I seek a TUTORIAL to simulate a cylindrical flow of a Newtonian fluid by ANSYS and ANSYS CFX FLEUNT. I tried with ANSYS FLUENT but I can not
*  Rigaku Introduces New High Accuracy Micro Area Residual Stress Analyzer | Rigaku
The Woodlands, TX - October 5, 2012. Rigaku announces today the global release of the AutoMATE II, a highly accurate micro area residual stress analyzer. The AutoMATE II is an improved version of the AutoMATE, a popular residual stress analyzer in the Japanese automotive industry. The AutoMATE II is designed to ensure that the highest standards are met, as far as residual stress is concerned, in terms of part quality, reliability, durability and safety when automotive parts are designed or produced.1449876037
*  Ansys Capital Expenditure (ANSS)
Ansys has a Capital Expenditure: $-14 Mil (ANSS). Ansys Capital Expenditure description, competitive comparison data, historical data and more.
*  The New Weibull Handbook by Dr. Robert B. Abernethy
The New Weibull Handbook 4th edition written by Dr. Robert B. Abernethy shows the latest developments in Weibull analysis with examples that demonstrate the use of reliability software known as SuperSMITH, WinSMITH Weibull, WinSMITH Visual
*  ANSYS Mechanical Premium: Finite Element Modeling
ANSYS structural analysis software includes advanced nonlinear stress simulations and comprehensive linear dynamics for finite element modeling.
*  One way ANOVA, Post-Hoc Comparison's test
A random selection of accounting firms from three regions is taken and they are asked to state the starting salary for a new accounting graduate. Do a one-way ANOVA to analyze these data using a 1% level of significance:.
*  Heat Shrinkable Rollcovers
Saint-Gobain® manufactures the largest seamless heat shrinkable rollcovers in the world featuring the best time-tested surface treatment available for maximum bond strength.
*  Compression - Instron
It is our objective at Instron to provide our customers the best ownership experience by delivering the highest quality products, expert support and world-class service.". ...
*  Polymer failure modes | SOLIDWORKS Forums
How do you define the allowable limits of a polymer? One suggestion I heard recently was to take the yield stress at a 10 % proof stess point and then