Blar i Institutt for maskinteknikk og produksjon på tittel
Viser treff 2750-2769 av 4068
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On the mechanical integrity of AA6082 3D structures deposited by hybrid metal extrusion & bonding additive manufacturing
(Peer reviewed; Journal article, 2020)Hybrid Metal Extrusion and Bonding Additive Manufacturing (HYB-AM) is a new solid-state process for the production of 3D metal structures. In HYB-AM, the wire feedstock is continuously processed through an extruder and ... -
On the mechanical integrity of welded joints made by Hybrid Metal Extrusion & Bonding Mechanical and microstructure characterisation of aluminium and aluminium-steel butt welds
(Doctoral theses at NTNU;2021:323, Doctoral thesis, 2021)This doctoral thesis is concerned with experimental studies of aluminium-aluminium and aluminium-steel butt welds made by Hybrid Metal Extrusion & Bonding (HYB). The primary objective of the work has been to evaluate the ... -
On the mechanisms of charge weld evolution in aluminum extrusion
(Journal article; Peer reviewed, 2024)This study aims to provide new insights into the governing mechanisms of material property evolution within the charge weld zone in the hot extrusion process of aluminum profiles. A set of 6xxx series aluminum alloy tubular ... -
On the microstructure evolution during isothermal low cycle fatigue of β-annealed Ti-6242S titanium alloy: Internal damage mechanism, substructure development and early globularization
(Journal article, 2018)The present work deals with the room and high temperature microstructure evolutions of a near alpha titanium alloy (Ti-6242S) during isothermal low cycle fatigue. The initial fully lamellar microstructure has been purposefully ... -
On the modelling of flexible graphite
(Doctoral theses at NTNU;2023:219, Doctoral thesis, 2023)Flexible graphite (FG) is obtained by compaction of exfoliated graphite in the form of sheets having a thickness of 0.2 to 3 mm and density ρ from 0.7 to 1.9g/cm3. Sigraflex® is a commercial type of FG with ρ = 1 g/cm3 ... -
On the porosity-dependent permeability and conductivity of triply periodic minimal surface based porous media
(Journal article; Peer reviewed, 2023)With the fast development in the field of additive manufacturing, triply periodic minimal surface (TPMS) based porous media have recently found many uses in mechanical property tuning. However, there is still a lack of ... -
On the post-processing of 3d-printed abs parts
(Journal article; Peer reviewed, 2021) -
On the role of hydrogen in stress corrosion cracking of magnesium and its alloys: Gas-analysis study
(Journal article; Peer reviewed, 2019)One of the main challenges impeding wider uptake of magnesium alloys by the industry is their poor resistance to general corrosion and stress-corrosion cracking (SCC), the nature of which is not fully understood. Although ... -
On the role of pre-exposure time and corrosion products in stress-corrosion cracking of ZK60 and AZ31 magnesium alloys
(Peer reviewed; Journal article, 2021)Pre-exposure of Mg alloys to corrosive media causes their embrittlement, which has been long associated with diffusible hydrogen penetrating into the metal. The time of the pre-exposure was suggested to promote embrittlement ... -
On the shear band velocity in metallic glasses: A high-speed imaging study
(Journal article; Peer reviewed, 2018)Development of localised shear bands (SB) in bulk metallic glassy (BMG) alloys was investigated by a high-speed microscopic imaging technique. The velocities of SBs propagating by a progressive mechanism were found to be ... -
On the Substitution of Aluminium for Copper Conductors in Battery Systems
(Doctoral theses at NTNU;2024:86, Doctoral thesis, 2024)Aluminium’s electrical conductance per-unit mass and per-unit cost is unequalled. These are two desirable properties in a world undergoing widespread electrification. Electricity generation, transmission and utilisation ... -
On the suitability of insourced Additive Manufacturing for spare parts management
(Peer reviewed; Journal article, 2022)Additive Manufacturing (AM) has recently emerged as a promising technique in spare parts manufacturing. Unlike conventional manufacturing (CM) techniques, AM can lead to a reduction in inventory levels, particularly when ... -
On the terms violating the custodial symmetry in multi-Higgs-doublet models
(Journal article, 2013) -
Online Classification of Alarm Floods Using a Word2vec Algorithm
(Chapter, 2023)Alarm floods are periods of intense alarm activity that may hinder control room operators' ability to diagnose and respond to process abnormalities. In this context, a method to guide and assist operators during alarm ... -
An ontology-based KBE application for supply chain sustainability assessment
(Peer reviewed; Journal article, 2022)Product Lifecycle Management (PLM) plays a key role in digital transformation demanded by Industry 4.0 and life cycle assessment, including sustainability assessment. Knowledge Based Engineering (KBE) applications can ... -
Open Real-Time Control and Emulation of Robots and Production Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:60, Doctoral thesis, 2012)This PhD thesis addresses the shop-oor control level in manufacturing and industrial production at some important points for the future. The main contributions are principles and software relating to the control of production ... -
An Open-Source Python-Based Boundary-Element Method Code for the Three-Dimensional, Zero-Froude, Infinite-Depth, Water-Wave Diffraction-Radiation Problem
(Journal article; Peer reviewed, 2021)In this paper, a new open-source implementation of the lower-order, 3-D Boundary Element Method (BEM) of solution to the deep-water, zero Froude-number wave-body interaction problem is described. A validation case for ... -
Operation-oriented reliability and availability evaluation for onboard high-speed train control system with dynamic Bayesian network
(Journal article; Peer reviewed, 2018)The reliability and availability of the onboard high-speed train control system are important to guarantee operational efficiency and railway safety. Failures occurring in the onboard system may result in serious accidents. ... -
Operational capacity planning in warehousing
(Master thesis, 2023)Kapasitetsplanlegging er ofte utfordrende for lager på grunn av svingende etterspørsel og mangel på viktig informasjon. Nøyaktig informasjon om tilgjengelig arbeidsstyrke og arbeidsbelastning er avgjørende for at lageret ... -
Operational data-driven prediction for failure rates of equipment in safety instrumented systems: A case study from the oil and gas industry
(Journal article; Peer reviewed, 2019)Safety instrumented systems are frequently deployed to reduce the risk associated with industrial activities, such as those in the oil and gas industry. A key requirement for safety-instrumented systems in standards like ...