Ultrasound array camera can help carbon fiber quality assurance

2015 ◽  
Vol 59 (6) ◽  
pp. 277
Keyword(s):  
Quality Assurance ◽  
Carbon Fiber ◽  
Fiber Quality ◽  
Array Camera

Incremental Inspection for Microrobotic Quality Assurance

2013 ◽  
Author(s):  
David L. Christensen ◽  
Elliot W. Hawkes ◽  
Annjoe Wong-Foy ◽  
Ronald E. Pelrine ◽  
Mark R. Cutkosky
Keyword(s):  
Quality Assurance ◽  
Standard Deviation ◽  
Carbon Fiber ◽  
Bond Strength ◽  
Rapid Prototyping ◽  
Three Dimensional ◽  
Good Resolution ◽  
Measurement Standard ◽  
Directional Microphone ◽  
Inspection Techniques

This paper addresses inspection techniques that can be performed by microrobots used for fabricating three dimensional structures. In contrast to most commercial rapid prototyping processes, the parallelism afforded by microrobot teams allows incremental inspection of structures during assembly. In the present case, this approach is applied to parts fabricated from carbon fiber struts bonded with UV-cured epoxy. Preliminary tests involving thermal and vibrational inspection methods are described and compared with the results of FEA models of the joints. Vibrational inspection performed by microrobots and recorded using a directional microphone, characterizes bond joint natural frequency with good resolution (an average measurement standard deviation of 5Hz over a range of 650–1215 Hz). These effective stiffness measurements are correlated with ultimate bond strength as well. The measurements are sufficient to distinguish between joints that do or do not have desired amounts of adhesive.

scholarly journals Carbon Fiber Belly Board Quality Assurance in Radiotherapy

2021 ◽  
pp. 110-117
Author(s):  
Aime M. Gloi ◽  
Javis Jackson ◽  
Angela Sonnier
Keyword(s):  
Quality Assurance ◽  
Carbon Fiber ◽  
Belly Board

scholarly journals Quality Assurance of Carbon Fiber

Kobunshi ◽  
1999 ◽  
Vol 48 (11) ◽  
pp. 857-857
Author(s):  
Ryuichi YAMAMOTO
Keyword(s):  
Quality Assurance ◽  
Carbon Fiber

scholarly journals Corrugated composites: production-integrated quality assurance in carbon fiber reinforced thermoplastic sine wave beam production

2017 ◽  
Vol 3 (1) ◽  
pp. 10-20 ◽  
Author(s):  
Frederic J. C. Fischer ◽  
Matthias Beyrle ◽  
Arthur-Hans Thellmann ◽  
Manuel Endrass ◽  
Thomas Stefani ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Carbon Fiber ◽  
Wave Beam ◽  
Sine Wave ◽  
Fiber Reinforced ◽  
Beam Production ◽  
Carbon Fiber Reinforced

Effects of high pressure on the crystallization of carbon fiber reinforced polyetheretherketone (CF/PEEK) laminate composites

1990 ◽  
Vol 48 (4) ◽  
pp. 876-877
Author(s):  
Hong-Ming Lin ◽  
C. H. Liu ◽  
R. F. Lee
Keyword(s):  
High Pressure ◽  
Carbon Fiber ◽  
Sample Surface ◽  
High Yield ◽  
Fiber Reinforced ◽  
Laminate Composites ◽  
Peek Composite ◽  
Continuous Carbon Fiber ◽  
Carbon Fiber Reinforced

Polyetheretherketone (PEEK) is a crystallizable thermoplastic used as composite matrix materials in application which requires high yield stress, high toughness, long term high temperature service, and resistance to solvent and radiation. There have been several reports on the crystallization behavior of neat PEEK and of CF/PEEK composite. Other reports discussed the effects of crystallization on the mechanical properties of PEEK and CF/PEEK composites. However, these reports were all concerned with the crystallization or melting processes at or close to atmospheric pressure. Thus, the effects of high pressure on the crystallization of CF/PEEK will be examined in this study.The continuous carbon fiber reinforced PEEK (CF/PEEK) laminate composite with 68 wt.% of fibers was obtained from Imperial Chemical Industry (ICI). For the high pressure experiments, HIP was used to keep these samples under 1000, 1500 or 2000 atm. Then the samples were slowly cooled from 420 °C to 60 °C in the cooling rate about 1 - 2 degree per minute to induce high pressure crystallization. After the high pressure treatment, the samples were scanned in regular DSC to study the crystallinity and the melting temperature. Following the regular polishing, etching, and gold coating of the sample surface, the scanning electron microscope (SEM) was used to image the microstructure of the crystals. Also the samples about 25mmx5mmx3mm were prepared for the 3-point bending tests.

Enhanced performance of supercapacitors by constructing a “mini parallel-plate capacitor” in an electrode with high dielectric constant materials

2020 ◽  
Vol 8 (32) ◽  
pp. 16661-16668
Author(s):  
Huayao Tu ◽  
Shouzhi Wang ◽  
Hehe Jiang ◽  
Zhenyan Liang ◽  
Dong Shi ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Carbon Fiber ◽  
Parallel Plate ◽  
Sandwich Structure ◽  
High Dielectric Constant ◽  
Parallel Plate Capacitor ◽  
Plate Capacitor ◽  
Fiber Metal ◽  
High Dielectric ◽  
Mini Plate

The carbon fiber/metal oxide/metal oxynitride layer sandwich structure is constructed in the electrode to form a mini-plate capacitor. High dielectric constant metal oxides act as dielectric to increase their capacitance.

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