Searched for: subject%3A%22failure%255C+analysis%22
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van de Kuilen, J.W.G. (author), Clerc, G. (author), Mosleh, Yasmine (author), Gard, W.F. (author), Richter, K. (author)
Similar to wood, adhesives may exhibit duration of load effects. When loaded for longer periods of time, damage processes in the material may develop, eventually leading to failure. From wood research it is known that load level, temperature and relative humidity have an important influence on this behaviour. In general, higher stress levels,...
journal article 2024
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Yarveisy, R. (author), Khan, Faisal (author), Abbassi, Rouzbeh (author)
This paper presents a data-driven approach to predict the pipelines’ corrosion-induced Burst failure. In this approach, different aspects of pit growth progression and spatial distribution of pits are simulated. The proposed approach takes advantage of population characteristics to model these aspects of the degradation paths for each pipe...
journal article 2024
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Ahmed, Junaid (author)
The use of Glass Fibre-Reinforced Polymer as a building material in structures or structural components is on the rise. Standards such as CUR96, DNV and JRC provide a basis of design with the material. However, there is a lack of confidence in the design phase with structures made of Glass Fibre-Reinforced Polymer, resulting in the use of large...
master thesis 2023
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Harandi, Ali Nazemi (author), Eslami, Abdoulmajid (author), Bahrami, Abbas (author), Bakhtafrouz, Asghar (author), Yazdan Mehr, M. (author)
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 micro-element, and the other was free from titanium in its chemical composition. Although the two...
journal article 2023
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Wu, Huan (author), Luo, Houcai (author), Zhang, Jingping (author), Zheng, Bofeng (author), Lang, Lei (author), Wang, Zeping (author), Zhang, Kouchi (author), Chen, Xianping (author)
To investigate the unclamped inductive switch (UIS) characteristics, 1200 V silicon carbide (SiC) planar MOSFETs with four cell topologies of linear, current sharing linear, square, and hexagon are designed and manufactured. The experimental platform was built and tested. The results show that the single pulse avalanche energy density of the...
journal article 2023
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Qian-Qian, Li (author), Mosleh, Yasmine (author), Alderliesten, R.C. (author), Hong-Hua, Zhang (author), Wei, Li (author)
To comply with the trend in the development of engineering materials towards lightweight, high strength, eco-friendly, sustainable, and multi-functional, a three-dimensional braided integrated composite honeycomb is designed. The effects of geometrical parameters particularly joint wall lengths on the in-plane mechanical behavior of the...
journal article 2023
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Wang, L. (author), Li, S. (author), Wang, Ping (author), Chen, Rong (author), Li, Z. (author)
The continuous homogeneous rail constraint of embedded rail system (ERS) is realized by the encapsulation of rails with the elastic poured compound (EPC) which is a composite material. Previous treatment of EPC as linear elastic material was insufficient in the failure analysis of ERS. In this work, a hyperelastic model is developed to...
journal article 2022
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YANG, SHUHAN (author)
Moisture absorbed by the hygroscopic polymers like molding compound and die-attach vaporizes during reflow lead to a high vapor pressure inside the electrical components lead to failure in the electrical device, named as popcorn failure. Popcorn failure in plastic encapsulated microcircuits has been a critical issue for electronic device...
master thesis 2021
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Zhang, X. (author)
As a primary component of the marine propulsion systems, ship propellers have been traditionally made of nickel-aluminium-bronze (NAB) or manganese bronze (MB). With the development of fibre reinforced composite materials, the advanced plastic materials are considered to be applied in the manufacturing of marine propellers. Compared to...
doctoral thesis 2021
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Bahrami, Abbas (author), Taheri, P. (author)
This paper investigates a failure in convection section tubes of a gas heater unit in a petrochemical plant. Tubes are made of AISI 304 stainless steel. The failure is reported after 5 years of service at working temperature 500 °C. The failure is in the form of circumferential cracks in the vicinity of the weld. Various characterization...
journal article 2019
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Abdul Madhar, S. (author), Mraz, Petr (author), Raquel Barrios Pereira, Sonia (author), Akroud, Nabil (author)
Asset condition monitoring through Partial Discharge (PD) measurements is widely used for pre-emptive maintenance especially in cable networks. Several monitoring systems rely on measurements in the High Frequency (HF) band using wideband sensors when it comes to PD monitoring to have higher Signal to Noise Ratios (SNR), ignoring the radical...
conference paper 2019
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Bahrami, Abbas (author), Taheri, P. (author)
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. Cracks are also largely branched. The microstructure of service-exposed tubes was evaluated using optical and...
journal article 2019
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Ruiz Arenas, S. (author)
Typically, emerging system failures have a strong impact on the performance of industrial systems as well as on the efficiency of their operational and servicing processes. Being aware of these, maintenance and repair researchers have developed multiple failure detection and diagnosis techniques that allow early recognition of system or...
doctoral thesis 2018
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Shipurkar, U. (author), Lyrakis, E. (author), Ma, Ke (author), Polinder, H. (author), Ferreira, Jan Abraham (author)
The power electronic converter, especially the power semiconductor, is a major contributor to the failure rates of the wind turbine drivetrain. As the temperature is a major driving factor behind the failure mechanisms of these power semiconductors the choice of topology and switching strategy can have a significant effect on the reliability...
journal article 2018
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Ruggeri, Edoardo (author), van Aken, Bas (author), Isabella, O. (author), Zeman, M. (author)
Imaging techniques, like electroluminescence and dark lock-in thermography, are valuable quality control tools as they yield quantitative and spatially resolved information about the device. In this paper, we isolated some of the conductive foil–cell interconnections of back-contact solar cells to study the appearance of these...
journal article 2018
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Fan, Jiajie (author), Mohamed, Moumouni Guero (author), Qian, Cheng (author), Fan, Xuejun (author), Zhang, Kouchi (author), Pecht, Micheal (author)
With the expanding application of light-emitting diodes (LEDs), the color quality of white LEDs has attracted much attention in several color-sensitive application fields, such as museum lighting, healthcare lighting and displays. Reliability concerns for white LEDs are changing from the luminous efficiency to color quality. However, most of the...
journal article 2017
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Del Frate, L. (author)
This thesis is an attempt to clarify a concept we are all familiar with, engineers and non-engineers alike. It shows that, behind the first impression of familiarity, there is a wide range of intuitions about failure which are not easily reconciled. While the ensuing ambiguities and lack of clarity may be tolerated in ordinary circumstances,...
doctoral thesis 2014
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Tang, J. (author)
The majority of Integrated Circuit (IC) devices are encapsulated in wire-bonded plastic IC packages. Epoxy molding compound is used as the encapsulation material and gold was used as the bonding wire material. However, the increase of gold material price from 400 USD/ounce in year 2005 to 1400 USD/ounce in year 2013 results in a major cost issue...
doctoral thesis 2014
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Radtke, F.K.F. (author)
Failure patterns and mechanical behaviour of high performance fibre-reinforced cementitious composites depend to a large extent on the distribution of fibres within a specimen. A discrete treatment of fibres enables us to study the influence of various fibre distributions on the mechanical properties of the material. The numerical analysis of...
doctoral thesis 2012
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Del Frate, L. (author)
Failure is a central notion both in ethics of engineering and in engineering practice. Engineers devote considerable resources to assure their products will not fail and considerable progress has been made in the development of tools and methods for understanding and avoiding failure. Engineering ethics, on the other hand, is concerned with the...
journal article 2012
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