Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 10446-10465 av 22998
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Hydrogen embrittlement of clad steel pipes: Experiments and FE modelling
(Doctoral theses at NTNU;2018:200, Doctoral thesis, 2018)Pipes with an inner layer of corrosion resistant alloy, so called clad pipes, are increasingly used in the oil and gas industry as en economical viable option for corrosion management, combining the mechanical properties ... -
Hydrogen embrittlement revealed via novel in situ fracture experiments using notched micro-cantilever specimens
(Journal article, 2018)The susceptibility of the FeAl intermetallic alloy to hydrogen-assisted cracking was investigated by in situ fracture experiments using notched micrometre-sized specimens using an Environmental Scanning Electron Microscope ... -
Hydrogen embrittlement suceptibility of steel armour wires for flexible pipes
(Peer reviewed; Journal article, 2020)Flexible pipes are frequently used both as flowlines and risers in the oil and gas industry. A flexible pipe has a complex structure consisting of layers of polymer and metallic materials. The armor wire layers – shielded ... -
Hydrogen Enhanced Fatigue Crack Growth Rates in a Ferritic Fe-3wt%Si Alloy
(Journal article; Peer reviewed, 2018)It is well known that the presence of hydrogen in ferrous materials promotes both static fracture and affect the material fatigue crack growth rates. The latter is often referred to as Hydrogen Enhanced Fatigue Crack Growth ... -
Hydrogen enhanced fatigue crack growth rates in a ferritic Fe-3 wt%Si alloy and a X70 pipeline steel
(Journal article; Peer reviewed, 2019)It is well known that ferrous materials can be damaged by absorption of hydrogen. If a sufficient quantity of hydrogen penetrates into the material, static fracture and the material's fatigue performances can be affected ... -
Hydrogen Fireball Consequence Analysis
(Peer reviewed; Journal article, 2020)A fireball may occur after the catastrophic rupture of a tank containing a flammable substance such as a fuel, if an ignition source is present. The fireball is identified by the combustion of the flammable cloud created ... -
Hydrogen for å skape nettfleksibilitet til landstrømanlegg ved Trondheim Havn
(Bachelor thesis, 2023)Cruiseindustrien hadde i 2021 et utslipp på omtrent 300 000tonn CO2-ekvivalenter. Det meste kommer fra skipenes fremdrift, men de fleste skip må idag benytte seg av dieselgeneratorer i anløp. Det er estimert et utslipp på ... -
Hydrogen gas explosions in pipelines - modeling and experimental investigations
(Doktoravhandlinger ved NTNU, 1503-8181; 2007::14, Doctoral thesis, 2007)Gas explosions in closed pipes with a single obstacle have been investigated both numerically and experimentally. Most of the work is related to hydrogen and air mixtures, but other fuels have also been used. At the present ... -
Hydrogen in the maritime
(Book, 2021)Hydrogen in the maritime is a deliverable under IEA TCP Hydrogen and investigates the use of hydrogen as a fuel in shipping. -
Hydrogen Induced Stress Cracking of Additive Manufactured Components made from Alloy 625 and 25Cr Super Duplex Stainless Steel
(Master thesis, 2022)Denne masteroppgaven har som mål å bidra til økt forståelse rundt hvordan 3D-printede komponenter produsert ved selektiv lasersmelting (SLM) blir påvirket av hydrogensprøhet (HISC). Både 25Cr super duplex rustfritt stål ... -
Hydrogen Induced Stress Cracking of Inconel 718 under Cathodic Polarization - Effects of Hydrogen on the Initiation and Propagation of Cracks
(Master thesis, 2015)This work has examined the susceptibility to hydrogen induced stress cracking (HISC) of Inconel 718 (UNS N07718) by stepwise tensile loading tests with in situ cathodic polarization. Specifically, the effect of hydrogen ... -
Hydrogen Induced Stress Cracking Resistance of Nickel Alloy ATI 830
(Master thesis, 2018)The following activities shall be included in the project: ATI 830 1. Document microstructure and mechanical properties for the received alloy. 2. Execute the test program given in Attachment 1. 3. Execute a literature ... -
Hydrogen Induced Stress Cracking susceptibility of strain-hardened Ni alloys Sanicro 35 and Alloy 750 HS
(Master thesis, 2023)I dette arbeidet er mottakeligheten for hydrogenindusert sprekking (HISC) blitt undersøkt og sammenlignet for to arbeidsherdede nikkelbaserte legeringer, Sanicro 35 (UNS N08935) og høystyrket P750 (DIN nr. 1.4675). Dette ... -
Hydrogen informed Gurson model for hydrogen embrittlement simulation
(Journal article; Peer reviewed, 2019)Hydrogen-microvoid interactions were studied via unit cell analyses with different hydrogen concentrations. The absolute failure strain decreases with hydrogen concentration, but the failure loci were found to follow the ... -
Hydrogen permeation in 13% Crsuper martensitic stainless steel and API X70 pipeline steel
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:208, Doctoral thesis, 2010)Hydrogen permeation measurements have been carried out on 13% Cr super martensitic stainless steel (SMSS), API X70 steel and type HBQ Coreweld under cathodic charging conditions at temperatures from 5°C to 80°C. In addition, ... -
Hydrogen production by water splitting using gas switching technology
(Peer reviewed; Journal article, 2020)This study demonstrates a novel“Gas Switching Water Splitting (GSWS)”technology for production of pure H2with integrated CO2capture. The reactor concept is based on the chemical looping technology where an oxygencarrier ... -
Hydrogen production from methanol partial oxidation through the catalyst prepared using torrefaction liquid products
(Peer reviewed; Journal article, 2020)This study developed a novel application of torrefaction liquid products (TLPs) for acidic catalyst sol-gel synthesis of SiO2 from tetraethyl orthosilicate (TEOS) to improve the thermal stability of Al2O3 catalyst supporter. ... -
Hydrogen som energibærer på Raumabanen
(Bachelor thesis, 2022)Abstract will be available on 2024-06-14 -
Hydrogen Storage: Thermophysical data and flow properties for some porous media
(Master thesis, 2010)Two rigs have been developed and built to measure thermal conductivity and permeability for porous materials. The intention of the rigs is to investigate the properties of some hydrogen adsorption materials. The materials ... -
Hydrogen stress cracking and crack initiation in precipitation hardened Ni-alloys
(Journal article; Peer reviewed, 2018)The two different precipitation hardened nickel alloys, Alloy 718 and Alloy 725, were tested in its as received condition. Their susceptibility to hydrogen stress cracking was examined by the use of stepwise increasing ...