scholarly journals PULL AND BENDING FORCE USING FIBERGLASS WR EPOXY COMPOSITE MATERIALS AND FIBER CARBON EPOXY

Vortex ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Alphario Rachmatino Yudiana
Keyword(s):  
Elastic Modulus ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Epoxy Composite ◽  
Testing Machine ◽  
Maximum Load ◽  
Average Value ◽  
Bending Force ◽  
Universal Testing ◽  
College Of Technology

Bending testing is carried out in the lab. Nurtanio Adisutjipto College of Technology Yogyakarta uses the Gotech Testing Machine INC (Universal Testing Machine) UTM testing machine where the results obtained in the test are in the form of a graphic in which the maximum load value, elastic modulus, area, yield point and span have been obtained. From the results of these tests, we can compare the average value of the maximum load and the modulus of elasticity received in each specimen with variations in carbon fiber and WR fiberglass.

scholarly journals Flexural Properties and Elastic Modulus of Different Esthetic Restorative Materials: Evaluation after Exposure to Acidic Drink

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Andrea Scribante ◽  
Marco Bollardi ◽  
Marco Chiesa ◽  
Claudio Poggio ◽  
Marco Colombo
Keyword(s):  
Elastic Modulus ◽  
Flexural Strength ◽  
Water Immersion ◽  
Testing Machine ◽  
Distilled Water ◽  
Resin Composites ◽  
Restorative Material ◽  
Universal Testing ◽  
Restorative Materials ◽  
Acidic Beverages

Background. Acidic beverages, such as soft drinks, can produce erosion of resin composites. The purpose of the present study was to investigate mechanical properties of different esthetic restorative materials after exposure to acidic drink. Methods. Nine different composites were tested: nanofilled (Filtek Supreme XTE, 3M ESPE), microfilled hybrid (G-ænial, GC Corporation), nanohybrid Ormocer (Admira Fusion, Voco), microfilled (Gradia Direct, GC Corporation), microfilled hybrid (Essentia, GC Corporation), nanoceramic (Ceram.X Universal, Dentsply De Trey), supranano spherical hybrid (Estelite Asteria, Tokuyama Dental Corporation), flowable microfilled hybrid (Gradia Direct Flo, GC Corporation), and bulk fill flowable (SureFil SDR flow, Dentsply De Trey). Thirty specimens of each esthetic restorative material were divided into 3 subgroups (n=10): specimens of subgroup 1 were used as control, specimens of subgroup 2 were immersed in 50 ml of Coca Cola for 1 week, and specimens of subgroup 3 were immersed in 50 ml of Coca Cola for 1 month. Flexural strength and elastic modulus were measured for each material with an Instron Universal Testing Machine. Data were submitted to statistical analysis. Results. After distilled water immersion, nanofilled composite showed the highest value of both flexural strength and elastic modulus, but its flexural values decreased after acidic drink immersion. No significant differences were reported between distilled water and acidic drink immersion for all other materials tested both for flexural and for elastic modulus values. Conclusions. Even if nanofilled composite showed highest results, acidic drink immersion significantly reduced flexural values.

Study on the Performances and Interfacial Structure of Magnesium Hydroxide Whiskers/ABS Composites

2011 ◽  
Vol 109 ◽  
pp. 46-50
Author(s):  
Yu Zhi Jiang ◽  
Li Li Zhang ◽  
Yan Bo Li
Keyword(s):  
Tensile Strength ◽  
Elastic Modulus ◽  
Magnesium Hydroxide ◽  
Testing Machine ◽  
Surface Modifications ◽  
Interfacial Structure ◽  
Melt Extrusion ◽  
Elongation At Break ◽  
Universal Testing ◽  
Mechanical Performances

The magnesium hydroxide (MH) whiskers / ABS composites were prepared by melt-extrusion with modified whiskers as filler. The mechanical performances, including the tensile strength, elongation at break and elastic modulus, were tested by electronic universal testing machine. The results showed that with the increasing of the whisker dosage, the tensile strength and elongation at break reduced gradually, and the elastic modulus get maximum when it is 25%.The morphology on fracture of composites was analyzed by SEM. The conclusions are the whiskers of surface modifications can be evenly distributed in the composites and bond partly with ABS. that it is necessary to enhance the combine strength of interface on excellence performances of composites.

scholarly journals Comparison of Pigtail with J Anchor Bolt in Normal Concrete

2018 ◽  
Vol 150 ◽  
pp. 03001
Author(s):  
Mohamad Hairi Osman ◽  
Mohamad Nur Mustaqim Abd Shukor ◽  
Suraya Hani Adnan ◽  
Mohamad Luthfi Ahmad Jeni ◽  
Mohd Sufyan Abdullah ◽  
...  
Keyword(s):  
Load Capacity ◽  
Testing Machine ◽  
Tensile Load ◽  
Steel Structure ◽  
Maximum Load ◽  
Anchor Bolt ◽  
Average Value ◽  
Two Samples ◽  
Bending Radius ◽  
Anchor Bolts

Anchor bolts have been used to attach the steel structure of concrete and transfer load into the concrete. Anchor bolts in concrete are to withstand the shear force as they connect steel beams to the reinforced concrete foundations. The research was carried out to increase the understanding and investigating the performance of anchor bolts Pigtail since there is a lack of research on the bolt and to compare it with anchor bolts J which have been widely used by the industry. According to the methodology, testing the tensile load was used in this research to get a maximum load capacity of the anchor bolt in concrete. The sample was embedded in concrete cylinders of 75mm radius and 300mm height. Depths of embedment were 200mm, 230mm, and 260mm. The Universal Testing Machine, UTM was used to test the strength of tensile. 12 samples were used, each type and depth used two samples to get the average value using concrete grade 30. The samples underwent the process of curing for 28 days. The anchor bolts J used a 40mm bending radius and the length of hook was 100mm. Anchor bolts pigtail also used the 10 bending radius with depth of 8mm that have been compressed using 16mm radius rigs with a load of 500kN. Results of the research showed the depth of 260mm for Pigtail almost the same with J 60.529kN and 53.628kN and anchor bolts J were 75.557kN and 76.332kN. Difference of the values was not too far vary when compared with the 200mm and 230mm depths. Each comparison showed the ability of each bolt and anchor bolt failure occurred. Performance of the anchor bolts pigtail can be used on a structure or a higher load at an embedment of 260mm. Embedment of 200mm and 230mm can be used on a lighter load if steel material saving is a priority in every usage.

scholarly journals Residual Strength of Carabiners Used by Tree Climbers

2009 ◽  
Vol 35 (2) ◽  
pp. 75-79
Author(s):  
Brian Kane ◽  
H. Dennis Ryan
Keyword(s):  
New York ◽  
Surface Roughness ◽  
Residual Strength ◽  
Testing Machine ◽  
Maximum Load ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Serious Injury ◽  
Long Term Studies

Tree climbers increasingly use carabiners and apply them in situations for which they are not designed. Because failure of carabiners can result in serious injury or death, the following study tested how well carabiners endure the stress to which climbers subject them. This study distributed carabiners of four types (all manufactured by Petzl) to climbers in Massachusetts and New York, USA, and collected them a year later. Then, carabiners were broken in a universal testing machine and measured the maximum load, as well as surface roughness. No carabiners broke below their rated strength; and used carabiners were, with one exception, as strong as new carabiners. Surface roughness was a weak, but significant, predictor of strength. Findings are discussed in light of climber safety and the importance of conducting long-term studies.

Performance Improvement of Carbon Fiber Reinforced Epoxy Composite Sports Equipment

2021 ◽  
Vol 871 ◽  
pp. 228-233
Author(s):  
Xu Dong Yang ◽  
Fan Gu ◽  
Xin Chen
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Epoxy Composite ◽  
Matrix Cracking ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Pole Vault ◽  
Further Development ◽  
Positive Effect

This study is to explore the changes in the performance of sports equipment under the action of carbon fiber reinforced epoxy composites. This paper studies the effects of carbon fiber reinforced epoxy composites in pole vault, bicycle, and tennis. The research results show that the performance of sports equipment based on carbon fiber reinforced epoxy composite materials has been greatly improved, with outstanding effects in terms of thermal properties, interface properties, mechanical properties, and fatigue resistance. Carbon fiber reinforced epoxy composite material damage expansion is divided into five stages: matrix cracking, interfacial degumming, delamination, fiber fracture, fracture. Therefore, carbon fiber reinforced epoxy composite materials are comprehensive for the improvement of sports equipment, which has greatly promoted the further development of sports. Carbon fiber reinforced epoxy composite materials can be promoted in other fields, thereby obtaining greater progress with help of high technology. The study of carbon fiber reinforced epoxy composites in this paper has a positive effect on subsequent research.

Embedded FBG Sensor in Aircraft Smart Composite Materials for Structural Monitoring

2013 ◽  
Vol 393 ◽  
pp. 311-316 ◽  
Author(s):  
Ramzyzan Ramly ◽  
Wahyu Kuntjoro ◽  
Mohd Kamil Abd Rahman
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Smart Materials ◽  
Sandwich Panel ◽  
Testing Machine ◽  
Aviation Industry ◽  
Smart Composite ◽  
Honeycomb Core ◽  
Fbg Sensor ◽  
Smart Composite Materials

This paper describes the use of embedded Fiber Brag Grating (FBG) sensor in the honeycomb core carbon fiber sandwich panel in smart composite materials for the application of monitoring the structural integrity of an aircraft. A part of vertical stabilizer was selected and reproduced using carbon fiber honeycomb core sandwich panels. The sandwich panel was fabricated in accordance to the generic sandwich structure and aviation industry standards, including the materials and also the method of construction. Using a carbon fiber from Hexcel as the face-sheet, Nomex honeycomb as the core, the sandwich panel was cured using Hysol EA9330 resin according to a standard curing process in the aviation industry. In order to make the sandwich panel as smart materials, optical sensor which has fiber bragg grating arrays, FBG, were embedded between the carbon fiber plies during the lay-out process. Using an FBG data logger and Instron 8802 Universal Testing Machine, the panel was subjected to flexural load and the FBG sensor signals were read at the load interval of 0.2 kN. From the experiment the results were taken and data was plotted and it shows that the FBG signals responded well to the load applied. In the future, the specimen will be used for further experiment for measuring strains and establishing the existence of damage in the panel.

Machinability of carbon fiber-epoxy composite materials in turning

1992 ◽  
Vol 32 (3) ◽  
pp. 553-570 ◽  
Author(s):  
Ki Soo Kim ◽  
Dai Gil Lee ◽  
Yoon Keun Kwak ◽  
Suk Namgung
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Epoxy Composite ◽  
Carbon Fiber Epoxy

A New Pipeline Repair System and Its Application in China

2008 ◽  
Author(s):  
Guo Liu ◽  
Xiuyun Wang ◽  
Minxu Lu
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Epoxy Composite ◽  
Cost Effective ◽  
Repair System ◽  
The Past ◽  
Repair Technology ◽  
Piping Systems ◽  
External Corrosion ◽  
Carbon Fiber Epoxy

For the past decade composite materials has been widely accepted as a repair method for damaged gas and liquid transmission pipelines. Composite wrap can serve as an alternative to the traditional pipeline repair practices such as pipeline replacement or the installation of full-encirclement steel split sleeves. A carbon-fiber/epoxy composite wrap system has been developed to rehabilitate and restore original operational strength to corroded and eroded pipelines and piping systems. This system is a permanent, cost-effective pipeline repair technology, suitable for non-leaking defects such as pits, dents, gouges, and external corrosion. This composite wrap system has been widely used in China for rehabilitations of numerous gas and petroleum pipelines.

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