Negative / Null Result ReportOpen accessMaterials of engineering and construction. Mechanics of materials
Li Zhou, Bo Chen, Yong Huang · 2022 · Advances in Materials Science and Engineering
To investigate the stress-strain relationship of fiber reinforced phosphogypsum (PG) under uniaxial compression, a total of twenty-seven PG prism specimens were fabricated and tested. The influences of the content of admixture, content of fiber, and water-solid ratio on the stress-strain curve of the specimens were investigated. Three kinds of failure modes were summarized by observing the experimental phenomena; they were called “compaction failure,” “tension failure,” and “mixed stress failure,” respectively. Through in-depth analysis of the test data, it was found that decreasing the water-
View details →Negative / Null Result ReportOpen accessMaterials of engineering and construction. Mechanics of materials
Jerusa Cleci de Oliveira, Glauber Aiello, Bruna Mendes et al. · 2010 · Materials Research
PURPOSE: This study evaluated the effect of storage in water and thermocycling on hardness and roughness of resin materials for temporary restorations. MATERIAL AND METHODS: Three acrylic resins (Dencor-De, Duralay-Du, and Vipi Cor-VC) were selected and one composite resin (Opallis-Op) was used as a parameter for comparison. The materials were prepared according to the manufacturers' instructions and were placed in stainless steel moulds (20 mm in diameter and 5 mm thick). Thirty samples of each resin were made and divided into three groups (n = 10) according to the moment of Vickers hardness
View details →Negative / Null Result ReportOpen accessMaterials of engineering and construction. Mechanics of materials
Lihui ZHANG, Shuo XIE, Mingfa LUO et al. · 2024 · Jin'gangshi yu moliao moju gongcheng
Objectives: Bone tissue grinding is one of the common and basic applications in orthopedic surgery clinics. The grinding process is energy-intensive and generates a lot of grinding heat. The accumulation of this heat may cause thermal damage to biological tissues. This paper presents experimental research to investigate the bone-grinding heat and the cooling method. Methods: The combined influence of nozzle position and feed direction on the cooling effect of bone grinding under cryogenic spray cooling conditions is experimentally investigated. A bone grinding platform with three-dimensional m
View details →Negative / Null Result ReportOpen accessMaterials of engineering and construction. Mechanics of materials
Thomas L. Goût, Anamul H. Mir, Simon M. Fairclough et al. · 2024 · npj Materials Degradation
Abstract Zirconolite ceramics present a chemically durable host matrix for waste actinides, but zirconolite dissolution rates reported in the literature often vary significantly. Here, the release of Ca and Al from a hot isostatically pressed zirconolite (Ca0.8Zr0.9Ce0.3Ti1.6Al0.4O7.0) was shown to be predominantly driven by preferential dissolution of minor perovskite and alumina phases. Both phases were undetectable by XRD, and the perovskite was difficult to detect by SEM-EDS. Whilst the zirconolite phase exhibited no signs of alteration, dissolution of the perovskite proceeded congruently
View details →Negative / Null Result ReportOpen accessMaterials of engineering and construction. Mechanics of materials
DUAN Peng, LIU Zong-de, TAO Xiang-qian, GU Shu-chao · 2021 · Cailiao Baohu
At present, the changes of microstructure and mechanical properties of T23 steel after served for more than 50 000 h have been less studied.In this work, with using the heat-delivery surface tubes of a 600 MW super-critical boiler as research object, the T23 steel final reheater tubes at various positions after about 80 000 h of service time were tested by microstructure analysis, tensile properties tests at room temperature and 525 ℃ temperature, and the deterioration degree and difference in mechanical properties between back and meet smoke side of tubes after long-term service were investig
View details →Null DatasetOpen accessMaterials of engineering and construction. Mechanics of materials
· 2009 · eXPRESS Polymer Letters
The thermal and reaction to fire characteristics of a flame retardant unsaturated polyester (UP) ternary system are presented here. Thermal gravimetric analysis showed an improved thermal stability between 200–600°C with the addition of ammonium polyphosphate (APP) and aluminium trihydroxide (ATH) formulation. Cone calorimetry tests indicated that ATH is more efficient than calcium carbonate at delaying the ignition time, lowering the carbon monoxide yield and lowering the peak heat release (PHRR). However the addition of APP and ATH to the formulation failed to demonstrate any significant syn
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