scholarly journals PERFORMANCE TESTS AND ANALYSIS OF STRUCTURAL ALUMINUM ALLOY BUCKLING-RESTRAINED BRACES

2010 ◽  
Vol 66 (2) ◽  
pp. 356-367
Author(s):  
Takashi SATO ◽  
Tsutomu USAMI ◽  
Masashi KURATA
Keyword(s):  
Aluminum Alloy ◽  
Performance Tests ◽  
Buckling Restrained Braces

Investigation on Discrepancy of Dynamic Responses between Two Constitutive Models of Aluminum Alloy BRBs in Structures

2016 ◽  
Vol 858 ◽  
pp. 214-218
Author(s):  
Qiang Liu ◽  
Xiao Qun Luo
Keyword(s):  
Aluminum Alloy ◽  
Damage Control ◽  
Academic Research ◽  
Constitutive Models ◽  
Engineering Application ◽  
Dynamic Responses ◽  
Core Material ◽  
Structural Dynamic ◽  
Plastic Energy ◽  
Buckling Restrained Braces

In the study, the employment of central aluminum alloy buckling restrained braces were attempted for damage control of a single-deck steel frame. Smart metal of A5083-H111 aluminum alloy was chosen to use as the core material of aluminum alloy buckling restrained braces. The discrepancy of structural dynamic responses between two constitutive models of aluminum alloy buckling restrained braces was studied. Two different cross section areas of aluminum alloy buckling restrained braces were adopted for comparative study. Displacement, reaction, stress, strain of critical area and plastic energy dissipation were investigated under one strong ground motion. Suggestions for further academic research and engineering application were given.

scholarly journals Fabrication of Ultralow Ice-Adhesion Slippery Liquid Infused Porous Surfaces on Aluminum Alloy (7075-T651)

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1025
Author(s):  
Yuan Yuan ◽  
Liang Wang ◽  
Guoyong Liu ◽  
Ruijin Liao
Keyword(s):  
Aluminum Alloy ◽  
Adhesion Strength ◽  
Water Drop ◽  
Mechanical Damage ◽  
Phosphoric Acid Solution ◽  
Uv Exposure ◽  
Performance Tests ◽  
Porous Surfaces ◽  
Aluminum Alloy 7075 ◽  
Ice Adhesion

Slippery liquid infused porous surfaces (SLIPS) have been considered to be potential and effective method for anti-icing. Much work needed to be done for the application in field. In this study, SLIPS were successfully fabricated on 7075-T651 aluminum alloy by anodizing in phosphoric acid solution with three different voltage parameters and coating lubricant. Then the most suitable anodization parameters of samples were selected through the anti-icing performance tests. The best as-prepared surface exhibited ultralow ice-adhesion strength, which reduced from 261 to 6 kPa. Meanwhile, the freezing time of water-drop on aluminum alloy surfaces have been dramatically delayed at −5 and −10 °C (humidity of 75% ± 5%), respectively. Moreover, the durability of the SLIPS have also been investigated. Cycles of icing/deicing, mechanical damage, thermal and UV exposure were used to investigate the durability of SLIPS, and SLIPS could still show low ice-adhesion strength.

Techniques for Transmission Electron Microscopy of Fiber-Matrix Interfaces in Aluminum Alloy-Boron Composites by Ion Erosio

1971 ◽  
Vol 29 ◽  
pp. 204-205
Author(s):  
G. G. Shaw
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Aluminum Alloy ◽  
Electron Beam ◽  
Pure Aluminum ◽  
Ion Milling ◽  
Transmission Electron ◽  
Fiber Matrix ◽  
Ion Erosion ◽  
Row Of Fibers

The morphology and composition of the fiber-matrix interface can best be studied by transmission electron microscopy and electron diffraction. For some composites satisfactory samples can be prepared by electropolishing. For others such as aluminum alloy-boron composites ion erosion is necessary.When one wishes to examine a specimen with the electron beam perpendicular to the fiber, preparation is as follows: A 1/8 in. disk is cut from the sample with a cylindrical tool by spark machining. Thin slices, 5 mils thick, containing one row of fibers, are then, spark-machined from the disk. After spark machining, the slice is carefully polished with diamond paste until the row of fibers is exposed on each side, as shown in Figure 1.In the case where examination is desired with the electron beam parallel to the fiber, preparation is as follows: Experimental composites are usually 50 mils or less in thickness so an auxiliary holder is necessary during ion milling and for easy transfer to the electron microscope. This holder is pure aluminum sheet, 3 mils thick.

Development of the corticospinal system and hand motor function: central conduction times and motor performance tests

2000 ◽  
Vol 42 (4) ◽  
pp. 220-227 ◽  
Author(s):  
U M Fietzek ◽  
F Heinen ◽  
S Berweck ◽  
S Maute ◽  
A Hufschmidt ◽  
...  
Keyword(s):  
Motor Function ◽  
Motor Performance ◽  
Performance Tests ◽  
Corticospinal System

Differential Performance of Professional Dancers to the Music Apperception Test and the Thematic Apperception Test

2018 ◽  
Vol 39 (1) ◽  
pp. 20-49
Author(s):  
Leland van den Daele ◽  
Ashley Yates ◽  
Sharon Rae Jenkins
Keyword(s):  
Visual Processing ◽  
Assessment Tool ◽  
Thematic Apperception Test ◽  
Performance Tests ◽  
Basic Emotions ◽  
Gender And Age ◽  
Thematic Apperception ◽  
Professional Dancers ◽  
Visually Based ◽  
Modality Preference

Abstract. This project compared the relative performance of professional dancers and nondancers on the Music Apperception Test (MAT; van den Daele, 2014 ), then compared dancers’ performance on the MAT with that on the Thematic Apperception Test (TAT; Murray, 1943 ). The MAT asks respondents to “tell a story to the music” in compositions written to represent basic emotions. Dancers had significantly shorter response latency and were more fluent in storytelling than a comparison group matched for gender and age. Criterion-based evaluation of dancers’ narratives found narrative emotion consistent with music written to portray the emotion, with the majority integrating movement, sensation, and imagery. Approximately half the dancers were significantly more fluent on the MAT than the TAT, while the other half were significantly more fluent on the TAT than the MAT. Dancers who were more fluent on the MAT had a higher proportion of narratives that integrated movement and imagery compared with those more fluent on the TAT. The results were interpreted as consistent with differences observed in neurological studies of auditory and visual processing, educational studies of modality preference, and the cognitive style literature. The MAT provides an assessment tool to complement visually based performance tests in personality appraisal.

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