Tag Archives: IGS

Fig. 3. Temperature capability of various material classes (courtesy NASA Lewis)

Advanced metals for aerospace and automotive use

This paper summary is based on the article Advanced metals for aerospace and automotive use presented at the Materials Science and Engineering, A184 (1994) 119-133 1. Overview: 2. Research Background: The pursuit of enhanced performance in aerospace systems and automobiles necessitates materials exhibiting superior characteristics compared to conventional materials. This is particularly critical for automotive

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Figure 4. Cross Section of Stator of 3‐F Induction Motor.

A Review of Recent Trends in High Efficiency Induction Motor Drives

1. Overview: 2. Research Background: Induction Motor (IM) drives are a crucial technology in modern industry, powering various applications including material handling, food and beverage processing, and electric transportation systems like EVs and e-trucks. Recently, there’s a growing focus on high-efficiency IM drive systems to reduce energy and fuel consumption, aligning with global sustainability initiatives.

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Figure 59: HX Prototype 10-E2: (Top) Tube bundle; (Middle) Header after casting; (Bottom) Cut header with tube ends showing.

Design and Manufacturing of High Performance, Reduced Charge Heat Exchangers

1. Overview: 2. Background: Heating, ventilation, air-conditioning, and refrigeration (HVAC&R) systems consume a significant portion of residential and commercial building energy. Reducing refrigerant charge to mitigate greenhouse gas emissions is a crucial objective. Traditional heat exchangers (HXs) using round tubes and fins have limitations in performance improvement and require further miniaturization to meet reduced refrigerant

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High-Pressure Die Casting of Al–Ce–La–Ni–Fe Alloys

High-Pressure Die Casting of Al–Ce–La–Ni–Fe Alloys

Benjamin E. MacDonald1, Stuart Wiesner2, Ryan Holdsworth1, Carl Söderhjelm1 & Diran ApelianORCID:orcid.org/0000-0001-9743-606X1 Abstract The effects on phase equilibria of La and Fe additions to the Al–Ce–Ni-based alloy system are explored under high-pressure die casting conditions. The addition of La to Al–Ce–Ni-based alloy system only reacts with Ce synergistically to promote the formation of the Al11(Ce,La)3 intermetallic phase as predicted by CALculation

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Fig. 3. (a) Schematic of four-point reversed bending set-up used in this study. Dimensions in mm. (b) Picture of the bending fatigue test set-up. The specimen was fixed by four fixtures, where two outer fixtures were connected to upper moveable shaft for applying the loading. The two internal fixtures were connected to the fixed base in the bottom. Between the fixture and the shaft/base were thin steel spring to ensure that the specimens can bend flexibly. To show the details more clearly, the distance between each fixture shown in the picture is larger than the actual distances used in this study.

Four-point bending fatigue behavior of rheocast AlSi7Mg0.3 alloy: Role of the surface liquid segregation

Author links open overlay panelQing Zhang a, Stefan Jonsson b, Anders E.W. Jarfors aShow moreAdd to MendeleyShareCite https://doi.org/10.1016/j.ijfatigue.2023.107791Get rights and content Under a Creative Commons licenseopen access Highlights Abstract The surface liquid segregation (SLS) layer in semisolid casting presents higher hardness than the surface of specimens cast using high-pressure die casting (HPDC). Bending fatigue tests showed that semisolid castings present better fatigue properties at

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Fig. 3. (a) Schematic of four-point reversed bending set-up used in this study. Dimensions in mm. (b) Picture of the bending fatigue test set-up. The specimen was fixed by four fixtures, where two outer fixtures were connected to upper moveable shaft for applying the loading. The two internal fixtures were connected to the fixed base in the bottom. Between the fixture and the shaft/base were thin steel spring to ensure that the specimens can bend flexibly. To show the details more clearly, the distance between each fixture shown in the picture is larger than the actual distances used in this study.

Four-point bending fatigue behavior of rheocast AlSi7Mg0.3 alloy: Role of the surface liquid segregation

Qing Zhang a, Stefan Jonsson b, Anders E.W. Jarfors a aJönköping University, School of Engineering, Materials and Manufacturing, 551 11 Jönköping, SwedenbKTH Royal Institute of Technology, School of Industrial Engineering and Management, Materials Science and Engineering, SE-100 44 Stockholm, Sweden Abstract The surface liquid segregation (SLS) layer in semisolid casting presents higher hardness than the surface of specimens cast using high-pressure die casting

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Figure 8(a) Inverse pole figure maps for halite grains with large Kristallbrocken grains labelled 1–5. (b) Pole figures of fine-grained matrix halite excluding five Kristallbrocken grains show no significant crystallographic preferred orientation (CPO). (c) Kernel average misorientation (KAM) map overlaid with white low- and high-angle grain boundaries (misorientation >5∘). KAM map was calculated over a distance of 40 µm (second neighbour) with a threshold of 3∘ in order to enhance the small-angle subgrain boundaries. KAM shows subgrain-free matrix halite with few exceptions in large matrix halite grains, Kristallbrocken 1 and 5 with subgrains, and subgrains in boudin necks of Kristallbrocken 3 and 4. (d) Cumulative reference orientation deviation map over the areas of Kristallbrocken 3 and 4, based on more highly resolved EBSD measurements. Reference points for each of the two grains are indicated. Panels (a) and (b) consist of 30 individual measurements, which due to image distortion under 70∘ tilt cannot be stitched perfectly. Therefore, in some cases an artificial separation of areas belonging to the same grain is visible

Large grain-size-dependent rheology contrasts of halite at low differential stress: evidence from microstructural study of naturally deformed gneissic Zechstein 2 rock salt (Kristallbrockensalz) from the northern Netherlands

Jessica Barabasch,Joyce Schmatz,Jop Klaver,Alexander Schwedt,and Janos L. Urai Abstract Constitutive laws to predict long-term deformation of solution-mined caverns and radioactive-waste repositories in rock salt play an important role in the energy transition. Much of this deformation is at differential stresses of a few megapascals, while the vast majority of laboratory measurements are at much higher differential

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