The effect of porosity on strain evolution and failure of soldered, small-diameter, thin-walled metallic pipes

McNair, Sophie A.M.; Srisuriyachot, Jiraphant; Omole, Samuel; Connolley, Thomas; Rhead, Andrew; Lunt, Alexander J.G.

doi:10.1016/j.jmrt.2022.12.088

Cited by 6 publications

(3 citation statements)

References 53 publications

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“…Samples were scanned while subjected to a rotation between -90° and 90° using an increment 0.1° with an exposure time of 0.25 s. Radiographs were collected using a high-resolution PCO. edge imaging camera (PCO, Germany) with a pixel size of 1.3x1.3 mm 2 and a field of view of 3.3x2.8 mm 2 (2540x2150 pixels) [12]. The experimental setup is shown in Figure 4.…”

Section: Synchrotron Imagingmentioning

confidence: 99%

Novel solutions for structural protections: retrofitting impact-vulnerable structures with non-Newtonian polymers

Elhawary,

Amjard,

Fallon

et al. 2024

Behavior and Mechanics of Multifunctional Materials XVIII

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Protecting structural components and infrastructures, especially in harsh environments and disaster-prone regions, is a growing challenge, that is exacerbated by the climate crisis. Current solutions often prove costly and complex, limiting their applications especially in developing countries. This research highlights the progress in developing advanced protective systems using traditional elastomers and non-Newtonian polymers (Shear Stiffening Gels -SSG) incorporated into impact-vulnerable structures. By introducing these polymers, it is possible to dynamically enhance the mechanical response of a structure when subjected to external loads, stopping the propagation of internal cracks while also enabling non-structural properties such as damage detection and autonomous healing. This approach is easy to integrate into existing structures making it very versatile for novel civil applications and structural components in the build environment. The adaptability of this approach has great potentiality for swift intervention in disaster-stricken areas.

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Section: Synchrotron Imagingmentioning

confidence: 99%

Novel solutions for structural protections: retrofitting impact-vulnerable structures with non-Newtonian polymers

Elhawary,

Amjard,

Fallon

et al. 2024

Behavior and Mechanics of Multifunctional Materials XVIII

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“…An increase in the number of corners of the inclusion resulted in a decrease in the radius of curvature, and the irregular shape of inclusions caused greater stress concentration. [8,33] Moreover, the hardness of inclusions is much higher than that of alloy matrix, [34][35][36] which has direct effect on the deformation of inclusions. Figure 13a displays some large-sized inclusions at the fracture, which were about 20-30 μm.…”

Section: Irregular Inclusionsmentioning

confidence: 99%

“…Especially for medical thin-walled tubes with small diameters, inclusions have become the main factor affecting the properties of tubes, and large-sized inclusions may even cause penetrating defects. [7][8][9][10] Many researchers [11,12] have found that the performance and surface quality of medical alloy can be effectively improved by controlling the nonmetallic inclusions through purity preparation. For instance, it is found that corrosion and mechanical properties of the purified Mg-Y biomaterials were improved remarkably compared with common casting method.…”

mentioning

confidence: 99%

Evolution Behaviors of Inclusions in Warm‐Rolled L605 Thin‐Walled Tubes and Their Effects on Machinability

Xun,

Luo,

et al. 2023

Adv Eng Mater

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This paper investigates the evolution behaviors of inclusions in the warm rolling process of L605 thin‐walled tubes and analyzes their influencing mechanism. Homogeneous spherical and irregular SiO2–Al2O3–Cr2O3(MnO + CaO) inclusions are observed in the cast tubes. After warm rolling, the homogeneous inclusions are changed into heterogeneous spherical ones with gray‐colored (Al2O3)‐rich phase and dark‐colored (SiO2)‐rich phase and Cr2O3(MnO + CaO)‐rich phase due to different deformability of various inclusions under the combined effects of diameter reduction and wall pressure. As the rolling times of tubes increases, large‐sized inclusions are crushed continuously, and the average size of the inclusions gradually decreases. At the same time, the number density of inclusions presents a first increasing and then decreasing trend. It is estimated that the critical size of the inclusions that are hard to further crack in warm rolling is about 0.5 μm. Meanwhile, the inclusions would lead to stress concentration at the positions near large‐sized irregular inclusions, causing cracks and penetrating defects. The simulation results show that the stress near the outer diameter of the inclusions is twice that in the middle and the changes of stress in the 30 μm inclusions and nearby areas exhibit a significant increase compared to the small‐sized 2 μm inclusions.

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Synchrotron X-ray diffraction and radiography - Lattice strain characterization in thin-walled carbon fibre channel structures subjected to buckling

Czapski,

Srisuriyachot,

Kaźmierczyk

et al. 2023

Carbon

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The effect of porosity on strain evolution and failure of soldered, small-diameter, thin-walled metallic pipes

Cited by 6 publications

References 53 publications

Novel solutions for structural protections: retrofitting impact-vulnerable structures with non-Newtonian polymers

Novel solutions for structural protections: retrofitting impact-vulnerable structures with non-Newtonian polymers

Evolution Behaviors of Inclusions in Warm‐Rolled L605 Thin‐Walled Tubes and Their Effects on Machinability

Synchrotron X-ray diffraction and radiography - Lattice strain characterization in thin-walled carbon fibre channel structures subjected to buckling

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