Results 1 to 10 of about 2,035,653 (257)

Prediction of concrete life under coupled dry and wet-sulfate erosion based on damage evolution equation [PDF]

open access: yesArchives of Civil Engineering, 2023
In a corrosive environment with coupled dry-wet-sulfate action, concrete structures are susceptible to erosion by sulfate ions, which seriously affects the safe operating life.
Nan Nie
doaj   +1 more source

A Study on the Predictive Maintenance Algorithms Considering Load Characteristics of PMSMs to Drive EGR Blowers for Smart Ships

open access: yesEnergies, 2021
Exhaust gas recirculation (EGR) is a NOx reduction technology that can meet stringent environmental regulatory requirements. EGR blower systems must be used to increase the exhaust gas pressure at a lower rate than the scavenging air pressure.
Sung-An Kim
doaj   +1 more source

Probabilistic fatigue life prediction of metallic components based on continuum damage mechanics

open access: yesXibei Gongye Daxue Xuebao, 2021
Based on continuum damage mechanics, a probabilistic method of predicting high-cycle fatigue life for metallic components is proposed. First, macro-meso two-scale stress-strain equations are established by combining Eshelby-Kroner localization law and ...

doaj   +1 more source

An Improved Similarity Trajectory Method Based on Monitoring Data under Multiple Operating Conditions

open access: yesApplied Sciences, 2021
With the complexity of the task requirement, multiple operating conditions have gradually become the common scenario for equipment. However, the degradation trend of monitoring data cannot be accurately extracted in life prediction under multiple ...
Jiancheng Yin   +3 more
doaj   +1 more source

Proposed Design Against High-Cycle Fatigue Failure of Metallic Beams Using Lamination [PDF]

open access: yesEngineering and Technology Journal, 2018
Fatigue analysis helps in predicting life of the component and seeks improvements of the whole process in design phase. Efforts are continually made to combat the fatigue phenomenon, yet certain mechanical components are still failing due to fatigue. The
Riyah Kiter
doaj   +1 more source

Damage Distribution Map Based Damage Accumulation Calculation Approach for Welded Joints

open access: yesMetals, 2023
Fatigue damage accumulation under variable amplitude loadings is vital for the life prediction of welded structures. An approach based on damage distribution mapping is presented. S-N curves of welded joints are utilized to construct fatigue damage zones,
Haochun Duan, Zhang Dang, Guoqian Wei
doaj   +1 more source

Study on Life Prediction Method of Ball Screw Base on Constructed Degradation Feature and IGWO-BiLSTM

open access: yesActuators, 2023
Regarding the problem of reduced remaining useful life (RUL) due to wear of the ball screw in the feed system of CNC (computer numerical control) machine tools, a prediction method based on constructing the degradation feature vector of the signal data ...
Qin Wu, Jun Niu, Xinglian Wang
doaj   +1 more source

A New Strategy for Bearing Health Assessment with a Dynamic Interval Prediction Model

open access: yesSensors, 2023
Bearing is the critical basic component of rotating machinery and its remaining life prediction is very important for mechanical equipment’s smooth and healthy operation.
Lingli Jiang   +5 more
doaj   +1 more source

Predicting Later-Life Outcomes of Early-Life Exposures [PDF]

open access: yesEnvironmental Health Perspectives, 2012
In utero exposure of the fetus to a stressor can lead to disease in later life. Epigenetic mechanisms are likely mediators of later-life expression of early-life events.We examined the current state of understanding of later-life diseases resulting from early-life exposures in order to identify in utero and postnatal indicators of later-life diseases ...
Boekelheide, Kim   +12 more
openaire   +5 more sources

Life prediction analysis of patrol vessel made from FRP with variations of wave height and wave direction [PDF]

open access: yesBIO Web of Conferences
The Fiber Reinforced Plastic (FRP) material used in ships has advantages such as lighter weight, resistance to corrosion, and lower maintenance costs. However, transitioning from materials like steel and aluminum, commonly used in production, requires ...
Octaviano Noel   +6 more
doaj   +1 more source

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