scholarly journals Ball‐on‐ring Test Validation for Equibiaxial Flexural Strength Testing of Engineered Ceramics

2021 ◽  
Author(s):  
Adrianna E. Lupercio ◽  
Ehsan Moshkelgosha ◽  
Riley C. Winters ◽  
Cayden Doyle ◽  
Mahmood Mamivand ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Test Validation ◽  
Ring Test ◽  
Strength Testing

Chairside CAD/CAM materials. Part 2: Flexural strength testing

2017 ◽  
Vol 33 (1) ◽  
pp. 99-109 ◽  
Author(s):  
Michael Wendler ◽  
Renan Belli ◽  
Anselm Petschelt ◽  
Daniel Mevec ◽  
Walter Harrer ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Strength Testing ◽  
Cad Cam

scholarly journals Effects of Powdery Cellulose Nanofiber Addition on the Properties of Glass Ionomer Cement

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3077 ◽  
Author(s):  
Takako Nishimura ◽  
Yukari Shinonaga ◽  
Chikoto Nagaishi ◽  
Rie Imataki ◽  
Michiko Takemura ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Cellulose Nanofibers ◽  
Glass Ionomer Cement ◽  
Chemical Properties ◽  
Fluoride Ion ◽  
Strength Testing ◽  
Glass Ionomer ◽  
Ion Release ◽  
Diametral Tensile Strength ◽  
Ionomer Cement

In this study, we aimed to evaluate the effect of the addition of powdery cellulose nanofibers (CNFs) on the mechanical properties of glass ionomer cement (GIC) without negatively affecting its chemical properties. Commercial GIC was reinforced with powdery CNFs (2–8 wt.%) and characterized in terms of flexural strength, compressive strength, diametral tensile strength, and fluoride-ion release properties. Powdery CNFs and samples subjected to flexural strength testing were observed via scanning electron microscopy. CNF incorporation was found to significantly improve the flexural, compressive, and diametral tensile strengths of GIC, and the corresponding composite was shown to contain fibrillar aggregates of nanofibers interspersed in the GIC matrix. No significant differences in fluoride-ion release properties were observed between the control GIC and the CNF-GIC composite. Thus, powdery CNFs were concluded to be a promising GIC reinforcement agent.

Effect of Sm2O3 Additives on the Rod-Like β-Si3N4 Crystal of Porous Silicon Nitride Fabricated by Reaction-Bonded

2010 ◽  
Vol 105-106 ◽  
pp. 42-45
Author(s):  
Jian She Yue ◽  
Hong Jie Wang
Keyword(s):  
Silicon Nitride ◽  
Porous Silicon ◽  
Aspect Ratio ◽  
Flexural Strength ◽  
High Aspect Ratio ◽  
Liquid State ◽  
Theory Testing ◽  
Strength Testing ◽  
Xrd Diffraction ◽  
Crystal Content

Sm2O3 and MgO as a sintering additives to fabricated porous silicon nitride by reaction-bonded. The phase of as-produced silicon nitride characterized by XRD-diffraction. The microstructure of product was investigated by SEM. The samples were machined into test bar for flexural strength testing. Using Archimedes theory testing the porosity of porous silicon nitride. MgO have restrain effect on the growth of rod-like silicon nitride, because of produce a restrain layer which is MgO reacted with SiO2 on the surface of silicon., the microstructure of crystal is particle like, the maximum flexural strength is 48MPa with porosity of 35%. Sm2O3 can assistant the growth of high aspect ratio Si3N4 crystal at beginning temperature of 1300°C for it’s low melt point and low viscidity in liquid state, the as-product’s morphology is rod-like and the flexural strength is as high as 300 MPa when the porosity is 30%, high than the sample that of low rod-like crystal content.

Comparison of three- and four-point flexural strength testing of denture-base polymers

1989 ◽  
Vol 5 (1) ◽  
pp. 2-5 ◽  
Author(s):  
P. Chitchumnong ◽  
S.C. Brooks ◽  
G.D. Stafford
Keyword(s):  
Flexural Strength ◽  
Strength Testing ◽  
Denture Base

Full-scale Flexural Strength Testing for Stone Cladding Design

2007 ◽  
Vol 4 (7) ◽  
pp. 100845 ◽  
Author(s):  
Steven G. Naggatz ◽  
Edward A. Gerns ◽  
K. Hoigard ◽  
M. Scheffler ◽  
S. W. Dean
Keyword(s):  
Flexural Strength ◽  
Full Scale ◽  
Strength Testing

scholarly journals Flexural strength of pure Ti, Ni-Cr and Co-Cr alloys submitted to Nd:YAG laser or TIG welding

2006 ◽  
Vol 17 (1) ◽  
pp. 20-23 ◽  
Author(s):  
Rick Rocha ◽  
Antônio Luiz Barbosa Pinheiro ◽  
Antonio Balbin Villaverde
Keyword(s):  
Flexural Strength ◽  
Laser Welding ◽  
Nd:Yag Laser ◽  
Metals And Alloys ◽  
Tig Welding ◽  
Strength Testing ◽  
Filling Material ◽  
Dental Prostheses ◽  
Welding Processes ◽  
One Way Anova

Welding of metals and alloys is important to Dentistry for fabrication of dental prostheses. Several methods of soldering metals and alloys are currently used. The purpose of this study was to assess, using the flexural strength testing, the efficacy of two processes Nd:YAG laser and TIG (tungsten inert gas) for welding of pure Ti, Co-Cr and Ni-Cr alloys. Sixty cylindrical specimens were prepared (20 of each material), bisected and welded using different techniques. Four groups were formed (n=15). I: Nd:YAG laser welding; II- Nd:YAG laser welding using a filling material; III- TIG welding and IV (control): no welding (intact specimens). The specimens were tested in flexural strength and the results were analyzed statistically by one-way ANOVA. There was significant differences (p<0.001) among the non-welded materials, the Co-Cr alloy being the most resistant to deflection. Comparing the welding processes, significant differences (p<0.001) where found between TIG and laser welding and also between laser alone and laser plus filling material. In conclusion, TIG welding yielded higher flexural strength means than Nd:YAG laser welding for the tested Ti, Co-Cr and Ni-Cr alloys.

The Study on Mechanical Properties and Microstructure of Cement Paste with Nano-TiO2

2012 ◽  
Vol 629 ◽  
pp. 477-481 ◽  
Author(s):  
Li Chao Feng ◽  
Chun Wei Gong ◽  
Yun Peng Wu ◽  
De Cheng Feng ◽  
Ning Xie
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Cement Paste ◽  
Strength Testing ◽  
Good Dispersion

Cement paste with addition of a small amount of (0.9wt%) nano-TiO2 were prepared. Flexural strength and compressive strength testing results showed that by adding a small amount of nano TiO2 with good dispersion, the 28-day flexural strength and compressive strength of cement paste modified by nano-TiO2 was increased by 16.12%, and 14.15%, respectively.

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