Results 41 to 50 of about 5,878,733 (293)

Concrete beams with externally bonded flexural FRP-reinforcement: analytical investigation of debonding failure [PDF]

open access: yes, 2003
This paper studies the problem of early concrete cover delamination and plate-end failure of reinforced concrete beams strengthened with externally bonded FRP-reinforcement. The accuracy of analytical models and finite element (FE) methods for predicting
Adams   +28 more
core   +1 more source

Electron-beam radiation induced degradation of silicon nitride and its impact to semiconductor failure analysis by TEM

open access: yesAIP Advances, 2018
By in-situ transmission electron microscopy (TEM), we performed a detailed study on the electron-beam radiation damage to nanostructured silicon nitride thin-film process layers in a typical semiconductor NVM device.
Binghai Liu   +6 more
doaj   +1 more source

Creep Failure of Reformer Tubes in a Petrochemical Plant

open access: yesMetals, 2019
This paper investigates a failure in HP-Mod radiant tubes in a petrochemical plant. Tubes fail after 90,000 h of working at 950 °C. Observed failure is in the form of excessive bulging and longitudinal cracking in reformer tubes.
Abbas Bahrami, Peyman Taheri
doaj   +1 more source

High-Strength Bolt Corrosion Fatigue Life Model and Application

open access: yesThe Scientific World Journal, 2014
The corrosion fatigue performance of high-strength bolt was studied. Based on the fracture mechanics theory and the Gerberich-Chen formula, the high-strength bolt corrosion fracture crack model and the fatigue life model were established.
Wang Hui-li, Qin Si-feng
doaj   +1 more source

Current status and development trend of laser remanufacturing of short stress path rolling mill

open access: yesCailiao gongcheng, 2019
The short-stress-path rolling mill is a mechatronics equipment which is widely used in the steel manufacturing industry. China has the largest number of used rolling mills in the world.
ZHANG Bin   +5 more
doaj   +1 more source

Understanding the Factors and Consequences of Gas Deflagration Accident in Metro Shield Tunnel: Site Investigation and Numerical Analysis

open access: yesBuildings, 2023
This study aims to investigate the factors and consequences of gas deflagration accidents in metro shield tunnels based on on-site investigation and numerical analysis.
Yi Shen   +4 more
doaj   +1 more source

Towards Formal Fault Tree Analysis using Theorem Proving

open access: yes, 2015
Fault Tree Analysis (FTA) is a dependability analysis technique that has been widely used to predict reliability, availability and safety of many complex engineering systems.
Ahmed, Waqar, Hasan, Osman
core   +1 more source

Clinical Insights Into Hypercalcemia of Malignancy in Childhood

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Hypercalcemia of malignancy (HCM) is a rare but life‐threatening metabolic emergency in children that occurs in less than 1% of pediatric cancer cases, with a reported incidence ranging from 0.4% to 1.0% across different studies. While it is observed in 10%–20% of adult malignancies, pediatric HCM remains relatively uncommon.
Hüseyin Anıl Korkmaz
wiley   +1 more source

Failure Analysis of Two HP-Nb Heat-Resistant Tubes after 46,000 h Exposure to Reformer Service Conditions

open access: yesMetals, 2023
This study presents a failure analysis in two reformer tubes used for hydrogen production in a petrochemical industry. These tubes (Tube A and Tube B) were made by the centrifugal casting of HP-Nb alloy in such a way that one contained titanium as a ...
Ali Nazemi Harandi   +4 more
doaj   +1 more source

Benefit of viral load testing for confirmation of immunological failure in HIV patients treated in rural Malawi. [PDF]

open access: yes, 2011
Objective  Viral load testing is used in the HIV programme of Chiradzulu, Malawi, to confirm the diagnosis of immunological failure to prevent unnecessary switching to second-line therapy.
Badri   +14 more
core   +2 more sources

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