Browsing Institutt for maskinteknikk og produksjon by Journals "Applied Sciences"
Now showing items 1-20 of 24
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A New Method of Low Amplitude Signal Detection and Its Application in Acoustic Emission
(Journal article; Peer reviewed, 2020)A novel methodology is proposed to enhance the reliability of detection of low amplitude transients in a noisy time series. Such time series often arise in a wide range of practical situations where different sensors are ... -
A Practical Approach for Data Gathering for Polymer Cure Simulations
(Journal article; Peer reviewed, 2018)Producing precision parts requires good control of the production parameters. When casting thermoset polymers an understanding of the curing process, with its heat release and associated temperature changes, is important. ... -
A Running Reference Analysis Method to Greatly Improve Optical Backscatter Reflectometry Strain Data from the Inside of Hardening and Shrinking Materials
(Journal article; Peer reviewed, 2018)Due to the increasing ease of use and the superiority of the results, distributed strain measurements, utilizing Optical Backscatter Reflectometry (OBR), have become more important and widespread over the last few years. ... -
An Energy-Based Approach for Fatigue Life Estimation of Welded Joints without Residual Stress through Thermal-Graphic Measurement
(Journal article; Peer reviewed, 2019)The traditional methodologies for fatigue life assessment of welded joints strongly depend on geometries and surface characteristics, as well as time. In this paper, an energy-based approach, independent of structures ... -
Calibration of Acoustic Emission parameters in relation to the equilibrium moisture content variations in a Pinus sylvestris beam
(Peer reviewed; Journal article, 2021)Under constant temperature conditions, air relative humidity variations affect hygroscopic objects, such as wood, modifying their moisture content and provoking, at low values, damages and fractures. The parameters (amplitude, ... -
Challenges and Accomplishments in Mechanical Testing Instrumented by In Situ Techniques: Infrared Thermography, Digital Image Correlation, and Acoustic Emission
(Journal article; Peer reviewed, 2021)A current trend in mechanical testing technologies is to equip researchers and industrial practitioners with the facilities for non-destructive characterisation of the deformation and fracture processes occurring on different ... -
A Comparative Study of the Application of Different Commercial Software for Topology Optimization
(Peer reviewed; Journal article, 2022)Topology optimization (TO) has been a popular design method among CAD designers in the last decades. This method optimizes the given design domain by minimizing/maximizing one or more objective functions, such as the ... -
Design of Wear-Resistant UHMWPE-Based Composites Loaded with Wollastonite Microfibers Treated with Various Silane Coupling Agents
(Peer reviewed; Journal article, 2020)The tribomechanical properties of the wear-resistant ultrahigh molecular weight polyethylene (UHMWPE)-based composites loaded with wollastonite microfibres silanized with various coupling agents (“KH-550”, “Penta-1006”, ... -
Effect of heat treatment on microstructure and creep behavior of Fe-40Ni-24Cr alloy
(Journal article; Peer reviewed, 2021)Iron-nickel-chromium (Fe-Ni-Cr) alloy Haynes HR120 is an iron-nickel-based superalloy, which is extensively used in gas turbines. Hence, the materials for the fabrication of steam turbine blades should present great ... -
Effect of Vanadium and Rare Earth on the Structure, Phase Transformation Kinetics and Mechanical Properties of Carbide-Free Bainitic Steel Containing Silicon
(Peer reviewed; Journal article, 2022)Carbide-free bainitic (CFB) steels with a matrix of bainitic ferrite and thin layers of retained austenite, to reduce the manufacturing costs, usually do not contain alloying elements. However, a few reports were presented ... -
Extension of the equivalent material concept to compressive loading: Combination with LEFM criteria for fracture prediction of keyhole notched polymeric samples
(Peer reviewed; Journal article, 2021)This work analyzes, both theoretically and experimentally, the fracture process of square specimens weakened by keyhole notches and subjected to compressive stresses. Two materials are covered: general-purpose polystyrene ... -
Fatigue Strength Assessment of Steel Rollers: On the Reliability of the Strain Energy Density Approach on Real Components
(Journal article; Peer reviewed, 2018)Welded joints are one of the most widely applied methods to join different steel components. However, they introduce stress concentrators that are commonly known to reduce the fatigue strength of structures. Several methods ... -
Functionally Graded Additive Manufacturing: Bridging the Gap between Design and Material Extrusion
(Peer reviewed; Journal article, 2023)Nowadays, the use of 3D printing is becoming a key process for on-demand and customized manufacturing. One of the most flexible 3D printing techniques is fused deposition modeling (FDM), where the combination of multiple ... -
Improving the Performance of Convolutional GAN Using History-State Ensemble for Unsupervised Early Fault Detection with Acoustic Emission Signals
(Peer reviewed; Journal article, 2023)Early fault detection (EFD) in run-to-failure processes plays a crucial role in the condition monitoring of modern industrial rotating facilities, which entail increasing demands for safety, energy and ecological savings ... -
In-Situ Strain Measurements in Large Volumes of Hardening Epoxy Using Optical Backscatter Reflectometry
(Journal article; Peer reviewed, 2018)Some large engineering structures are made by casting polymers into a mold. The structures can have complicated geometries and may be filled with other components, such as electrical transformers. This study investigated ... -
Influencing Factors in Acoustic Emission Detection: A Literature Review Focusing on Grain Angle and High/Low Tree Ring Density of Scots Pine
(Peer reviewed; Journal article, 2022)Among non-destructive testing (NDT) techniques applied to structural health monitoring in existing timber structures, ranging from visual inspection to more sophisticated analysis, acoustic emission (AE) is currently ... -
Is digital twin technology supporting safety management? A bibliometric and systematic review
(Peer reviewed; Journal article, 2021)In the Industry 4.0 era, digital tools applied to production and manufacturing activities represent a challenge for companies. Digital Twin (DT) technology is based on the integration of different “traditional” tools, such ... -
Lifetime assessment and optimization of a welded a-type frame in a mining truck considering uncertainties of material properties and structural geometry and load
(Peer reviewed; Journal article, 2019)In order to improve the fatigue performance of a welded A-type frame in a heavy off-road mining truck, a novel method was presented to implement lifetime and weight collaborative optimization while considering uncertainties ... -
Mechanical and metallurgical properties of co2 laser beam inconel 625 welded joints
(Peer reviewed; Journal article, 2021)In the frame of the circular economy, welding of Ni-based superalloys has gained increasing importance when applied, for instance, to repairing highly expensive components widely used in strategical sectors, such as the ... -
A Multi-Analytical Approach for the Characterization of Seventeenth Century Decorative Wall Paintings in Two Norwegian Stave Churches: A Case Study at Eidsborg and Heddal, Norway
(Peer reviewed; Journal article, 2021)The presented research examines 17th century distemper paint from the polychrome wooden interiors of two Norwegian stave churches: Eidsborg and Heddal. For the first time, the inorganic and organic components of specimens ...