Blar i NTNU Open på tidsskrift "MATEC Web of Conferences"
Viser treff 1-20 av 21
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A Comparison of Hazards and Efficiencies of Conventional and Adaptive Control Algorithms Using Systems-Theoretic Process Analysis
(Journal article; Peer reviewed, 2019)Control systems are an important and increasingly complex part of most industrial and non-industrial systems. As such, identifying and handling associated risks is increasingly important. Systems- Theoretic Process Analysis ... -
Additive manufacture of superduplex stainless steel using WAAM
(Journal article; Peer reviewed, 2018)Superduplex stainless steels have been used in the oil and gas industry for a couple of decades due to the combination of excellent mechanical properties and corrosion resistance. The present investigation addresses the ... -
An investigation of outlier detection procedures for CMM measurement data
(Journal article; Peer reviewed, 2018)The paper analyses methods for outlier detection in dimensional measurement. The cross sections of an internal cylinder were inspected by CMM (coordinate measuring machine), and received data sets were employed for further ... -
Characterisation of porous coatings formed on titanium under AC plasma electrolytic oxidation
(Journal article; Peer reviewed, 2018)The Plasma Electrolytic Oxidation (PEO) process may be used to fabricate porous coatings on titanium. The ranges of voltages used in case of these plasma treatments are different. It has been found that for DC PEO processing ... -
Characterisation of porous coatings formed on titanium under DC plasma electrolytic oxidation
(Journal article; Peer reviewed, 2018)Porous coatings on titanium may be obtained by AC or DC Plasma Electrolytic Oxidation (PEO) process. One has to point out that depending on the plasma treatment the ranges of voltages used are different. It has been found ... -
Compact wooden roofs with smart vapour barriers – effect of wooden joists on drying of built-in moisture
(Journal article; Peer reviewed, 2019)The application of a smart vapour barrier in compact wood frame roofs has been investigated. The study was performed using a laboratory setup for small roof elements, exposed to a typical Nordic summer climate and a high ... -
Detailed investigation of the shearing mechanism of β" precipitates in Al-Mg-Si alloys
(Peer reviewed; Journal article, 2020)The mechanism behind shearing of β'' precipitates in Al-Mg-Si alloys during deformation is investigated by applying advanced transmission electron microscopy (TEM) techniques and frozen phonon multislice TEM image simulations ... -
Determining alkali leaching during accelerated ASR performance testing and in field exposed cubes using cold water extraction (CWE) and μXRF
(Journal article; Peer reviewed, 2018)Considerable leaching of alkali metals was documented, both in concrete samples exposed to accelerated laboratory testing and field samples. CWE allowed to quantitatively determine the free alkali metal profiles as a ... -
Experimental and numerical investigation of strain distribution of notched lead fatigue test specimen
(Journal article; Peer reviewed, 2018)The work here presented focuses on the test methodology related to effect of stress concentrators in strain controlled structures. Cable sheathing as used in subsea power cables are investigated by cyclic fatigue testing, ... -
Experimental validation of pressure drop models during flow boiling of R134a – effect of flow acceleration and entrainment
(Journal article; Peer reviewed, 2018)A crucial step to assure proficient work of power and process apparatus is their proper design. A wide array of those devices operates within boiling or condensation of the working fluid to benefit from high heat transfer ... -
Fatigue assessment of semi-circular notched specimens produced by Laser Engineered Net Shaping method
(Journal article; Peer reviewed, 2018)As a primary failure mechanism, fatigue failure of additively manufactured metallic parts has attracted considerable attention in both aerospace and biomedical applications. According to some specific design requirements, ... -
Fatigue investigation of complex weldments by the means of the local strain energy density approach
(Journal article; Peer reviewed, 2018)The paper investigates the use of an energetic approach based on the strain energy density failure criteria to predict the fatigue life of welded joints in aluminum alloy. The cited criterion has already been proved valid ... -
High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion
(Journal article; Peer reviewed, 2018)Fatigue life is known to be dependent on the surface properties of the material. Surface roughness provokes local stress concentration and cause crack initiation even at minute cyclic loads. In laser powder bed fusion, the ... -
Hydrogen-assisted fatigue crack growth in ferritic steels – a fractographic study
(Journal article; Peer reviewed, 2018)Fatigue crack growth (FCG) behavior of a Fe-3wt.%Si ferritic alloy under different environmental conditions using in-situ electrochemical (cathodic) hydrogen (H) charging has been investigated. Three frequencies have been ... -
Interfacial microstructure formation in A356/steel compound castings using metal coating
(Peer reviewed; Journal article, 2020)Compound castings between aluminum and steel have great potential for applications in the automotive industry. However, due to large differences in thermal and mechanical properties between steel and aluminum, and the ... -
Local strain energy based fatigue assessment of cruciform welded joints: experimental data analysis and influence of hot-dip galvanization
(Journal article; Peer reviewed, 2018)Performing the fatigue assessment of a welded joint using the Notch Stress Intensity Factors [1] presents two major challenges. The first is the necessity of a precise reconstruction of the stress field around the notch ... -
Outdoor exposure site testing for preventing Alkali-Aggregate Reactivity in concrete – a review
(Journal article; Peer reviewed, 2018)Alkali-silica reaction (ASR) is a deleterious chemical reaction affecting the durability and service life of concrete structures worldwide. Specifications and recommendations were produced in many countries to ensure that ... -
Robust estimation of optimal sample size for CMM measurements with statistical tolerance limits
(Journal article; Peer reviewed, 2018)The paper proposes the kernel probability density function approach to estimate the distribution of measurements on a part which is measured in a coordinate measuring machine (CMM). The study is based on the experimental ... -
Three decades of international RILEM activities to combat deleterious Alkali-Silica Reactions (ASR) in concrete
(Journal article; Peer reviewed, 2018)Since 1988, the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM) Technical Committees (TCs) have been seeking to establish universally applicable test methods for ... -
Using the Hybrid Metal Extrusion & Bonding (HYB) Process for Butt Welding of 4 mm Plates of AA6082-T6
(Journal article; Peer reviewed, 2018)Hybrid Metal Extrusion & Bonding is a new solid state joining technique developed for aluminium alloys. By the use of filler material addition and plastic deformation sound joints can be produced at operational temperatures ...