Results 21 to 30 of about 34,422 (242)

Cyclic thermogravimetry of TBC systems [PDF]

open access: yes, 2007
The previously developed cyclic thermogravimetry analysis (CTGA) method is applied to the cyclic oxidation at 1100 °C of ZrO2–Y2O3/NiPtAl or NiCoCrAlYTa/single crystal nickel-base AM3 superalloy TBC systems.
Monceau, Daniel   +2 more
core   +2 more sources

Effects of Tooth Surface Crack Propagation on Meshing Stiffness and Vibration Characteristic of Spur Gear System

open access: yesApplied Sciences, 2021
Tooth surface cracks are considered as the early stage of the development of tooth surface spalling failure. Understanding the excitation mechanism of surface cracks has a great significance in the early diagnosis of spalling faults.
Lan-tao Yang   +5 more
doaj   +1 more source

Two-way patched RC slabs under concentrated loads [PDF]

open access: yesИнженерно-строительный журнал, 2020
Damage that occurs in reinforced concrete elements can reduce the capacity and serviceability of these elements. One of the damages that may be encountered is spalling or delamination of concrete covers.
S.A. Kristiawan, A. Supriyadi
doaj   +1 more source

Evaluation of the effect of polypropylene fiber insertion on the performance of UHPC at elevated temperatures [PDF]

open access: yesRevista IBRACON de Estruturas e Materiais
Ultra-high performance concrete (UHPC) has emerged as a promising material in civil construction due to its excellent mechanical properties. However, its dense microstructure makes it highly susceptible to explosive spalling under elevated temperatures ...
Thiago Marques Viana   +3 more
doaj   +2 more sources

Evaluation and Study of Prestressed Slab Structure Precast Modular Concrete

open access: yesMedia Komunikasi Teknik Sipil, 2020
Prestressed precast modular concrete slabs function rigid pavement, supporting vehicle loads above it on subgrade with relatively low bearing capacity. This slab measures 2000 x 850 x 150 mm3 of regular reinforced concrete (old production) or prestressed
I Gusti Lanang Bagus Eratodi   +3 more
doaj   +1 more source

A review of physics-based models in prognostics: application to gears and bearings of rotating machinery [PDF]

open access: yes, 2016
Health condition monitoring for rotating machinery has been developed for many years due to its potential to reduce the cost of the maintenance operations and increase availability.
Cubillo, Adrian   +2 more
core   +2 more sources

Investigation on spalling resistance of ultra-high-strength concrete under rapid heating and rapid cooling

open access: yesCase Studies in Construction Materials, 2016
Effects of the fiber type, dosage and length on the explosive spalling of ultra-high-strength concrete under rapid heating and rapid cooling were experimentally investigated.
Sun Bei, Lin Zhixiang
doaj   +1 more source

A Study of the Residual Strength of Reactive Powder-Based Geopolymer Concrete under Elevated Temperatures

open access: yesApplied Sciences, 2021
This paper reports on studies relating to the unstressed residual compressive strengths of geopolymer pastes that are heated up to 800 °C, behavior of reactive powder concrete before and after exposure to elevated temperatures and thermal behavior of ...
Thathsarani Kannangara   +3 more
doaj   +1 more source

Causes of Failures in Circular Concrete Silo Walls, Particularly Under Environmental Influences

open access: yesSlovak Journal of Civil Engineering, 2021
The paper reports the results of a case study for achieving longer service life and increasing the environmental sustainability of concrete silos. Damage mechanisms in concrete silo walls, and respectively in cylindrical structures (e.g., chimneys ...
Bilčík Juraj   +3 more
doaj   +1 more source

Time-Varying Meshing Stiffness Calculation and Dynamics Simulation of Multi-Spalling Gear

open access: yesMachines
Spalling alters a gear’s time-varying meshing stiffness (TVMS), thereby affecting its vibration characteristics. However, most studies focus on single-spalling gears and overlook the possibility of multi-spalling gears.
Xiangxi Kong   +4 more
doaj   +1 more source

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