โครงงานนี้มีวัตถุประสงค์เพื่อเพื่อศ

This project is aimed to study the behaviour of structural joint damage, aluminum and fiberglass, sotrong cylinder under axial impact. By the enclosed materials, fibre reinforced types This study, conducted by experimental methods using structural pipe workpieces that are joint between aluminum accounted for per diameter thickness (D/t ratio) equal to 21.16, 25.40, 31.75, 37.04 and epidermis of the aluminum tube is covered with materials, types of fibers reinforced fiberglass/polyester. In a study to make format changes to views of the fibers that hold 3 format is [0], [90], [45], [02], [902], [0/90, 90/0], [+ 45/45], [03], [903], [0/902], [90/02], [902/0], [02/90], [+ 45/ -452] then will bring the piece of work to do to test the shocks on the longitudinal axis, with a weight of 30 kg, and bumps heads with speed bumps at 7 m/s. From the study found that the structure and aluminum alloy pipe blank tend to be proportionately increased in diameter per thickness (D/t) and from the angle of the position education the fibres found that the pattern [0/995] can get the highest impact, which is higher than the aluminum pipes to 56.11, 51.21, 36.62 and 49..45% D/t equal to 21.16, 25.40, 31.75, and 37.04 respectively. In the section of the energy-absorbing find format [912/0] can absorb high energy, which is higher than the aluminum pipes to 11.54, 21.94, 30.67% D, and 10.42/t equal to 21.16, 25.40, 31.75, and energy, respectively, and, in the case of 37.04 absorbs specificities found that aluminum can absorb highest energy. It also found that the characteristics and behaviors of structural damage, pipe joint is the Lamina bucking bucking Local mode, Fiber, breaking, bending, and Laminar.

This project aims to study the behavior of structural joint damage aluminum and fiberglass cylinder under axial impact. The fiber-reinforced composite material wrapped. The study was conducted by means of experiments using a piece of aluminum pipe joint structure. A ratio of diameter to thickness (D / t ratio) of 21.16, 25.40, 31.75, and 37.04 outer surface of the tube, aluminum is coated with a composite fiber-reinforced fiberglass / poly-ester. The study will change the layout of the fibers to form a 15 [0], [90], [45], [02], [902], [0/90], [90/0]. [+ 45 / -45], [03], [903], [0/902], [90/02], [902/0], [02/90], [+ 45 / -452], then. bring specimens to test the impact of the vertical axis with Breakers weighs 30 kg and has speed bumps 7 m / s
from the study showed that the pipe structure together and tubes, aluminum is likely to receive. the impact that increases in diameter to thickness ratio (D / t), and the layout of the fibers that form [0/902] can have the highest impact. Which is higher than that of aluminum pipe 56.11, 51.21, 36.62, and 49.45% at D / t equals 21.16, 25.40, 31.75, and 37.04, respectively, in terms of energy absorption that model [902/0] can. energy absorption is highest above the pipe, aluminum is up to 11.54, 21.94, 30.67, and 10.42% at D / t equals 21.16, 25.40, 31.75, and 37.04, respectively, and the energy-absorbing specifications found in. aluminum can absorb energy as high as possible. It also found that the characteristics and behavior of the damaged pipe joint structure is Lamina bucking mode, Fiber breaking, Local bucking, and Laminar bending.

The purpose of this project is to study the damage of structures in aluminum and fiberglass cylinder under the impact of the axis. By wrapping materials of fiber reinforced This study was conducted by means of experiment using a piece of pipe joint structure between the aluminum. The ratio of diameter to thickness (D / T ratio) was 21.16 25.40 31.75,,, and 37.04 surface of the aluminum pipe is covered by a composite material of fiber reinforced fiberglass / polyester. In this study, the change of forms place the angle of the fibers on 15 forms [0], [], [90 45], [], [02 902], [0 / 90], [90 / 0], [+ / - 45 45],! [], [03 903], [0 / 902], [90 / 02], [902 / 0], [02 / 90], [+ / - 45 452] then the workpiece to the test of impact in axial with the head impact weight 30 kg. And high speed bumps 7 m / S.The results showed that the pipe joint structure and the aluminum tube, no tend to impact increases in proportion to the diameter to thickness. (D / T) and from the angle of educational planning model, it was found that fibers form [0 / 902] can get high impact. The aluminum tube blank, to 56.11 51.21 36.62 49.45%, and D / T was 21.16 25.40 31.75,,, and 37.04 respectively. In terms of energy absorption and found that form [902 / 0] can absorb the energy maximum, which is higher than the aluminum pipe blank to 11.54 21.94 30.67,,, and 10.42%. D / T was 21.16 25.40 31.75,,, and 37.04 respectively. The energy absorption and found that the aluminum can be high energy absorption. It was also found that the characteristics and behavior of structure damage pipe joint is Lamina bucking mode Fiber breaking Local bucking,,, and. Laminar bending.