The Manufacturing of the Bamboo Buffer Packaging Material

2011 ◽  
Vol 328-330 ◽  
pp. 1369-1372 ◽  
Author(s):  
Ye Liu ◽  
Shi Hang Wang
Keyword(s):  
High Efficiency ◽  
Bubble Diameter ◽  
Testing Machine ◽  
Packaging Material ◽  
Impact Testing ◽  
Maximum Acceleration ◽  
Foaming Agents ◽  
Bamboo Pulp ◽  
Stress Curve ◽  
The Impact

At present work, to make cushioning packaging material from the bamboo fibers. Change the time of the surface treatment and the component contents of foaming agents, adhesives, plasticizers, cross-linking agents, etc. to analyze the effects on the foam density, foaming rate, elasticity, and bubble diameter. The best reagent and the optimal ratio of the various components have been identified. Determined the parameter of foaming techniques based on the high efficiency and no polluting foaming mechanism. Experiment with the impact testing machine to obtain the maximum acceleration - static stress curve, dynamic stress - strain curves, dynamic buffer factor - stress curve, Analyzed the dynamic buffer performance on the of changing the drop height and compared with other cushioning material. we know that: at height of 450mm, the product had lower peak acceleration value than EPE and EPS during the stress area of 2.8-5.4kpa, which means the cushioning property of the bamboo pulp product is better at that time.

scholarly journals Effects of temperature and impactor nose diameter on the impact behavior of PA6 and PP thermoplastic composites

2018 ◽  
Vol 51 (1) ◽  
pp. 64-74 ◽  
Author(s):  
Akar Dogan ◽  
Yusuf Arman
Keyword(s):  
Load Capacity ◽  
Testing Machine ◽  
Polyamide 6 ◽  
Impact Testing ◽  
Impact Behavior ◽  
Thermoplastic Composites ◽  
Test Machine ◽  
Effects Of Temperature ◽  
Impact Energies ◽  
The Impact

In this study, the effects of temperature and impactor nose diameter on the impact behavior of woven glass-reinforced polyamide 6 (PA6) and polypropylene (PP) thermoplastic composites were investigated experimentally. Impact energies are chosen as 10, 30, 50, 70, 90, 110, 130, and 170 J. The thickness of composite materials is 4 mm. Impact tests were performed using a drop weight impact testing machine, CEAST-Fractovis Plus, and the load capacity of test machine is 22 kN. Hemispherical impactor nose diameter of 12, 7, and 20 mm were used as an impactor. The tests are conducted at room temperature (20°C and 75°C). As a result, the PP composites of the same thickness absorbed more energy than PA6 composites. The amount of absorbed energy of PP and PA6 composites decreased with temperature.

Effect of Hydrogen Content on Impact Property of A357 Alloy

2011 ◽  
Vol 704-705 ◽  
pp. 1201-1204 ◽  
Author(s):  
Yang Li ◽  
Zheng Bing Xu ◽  
Jian Min Zeng
Keyword(s):  
Crack Propagation ◽  
Hydrogen Content ◽  
Impact Test ◽  
Testing Machine ◽  
Initial Crack ◽  
Impact Testing ◽  
Total Absorption ◽  
A357 Alloy ◽  
Absorption Energy ◽  
The Impact

The impact specimens with different hydrogen contents were solution treated at 540±3°C for 12h; water quenched at 60-100°C; and aged at 165±1°C for 6h. The impact test was carried out at Roell450 pendulum impact testing machine. The impact test results show that the impact energy has strong relation with the hydrogen content. The total absorption energy increases with the increasing of hydrogen content. The crack propagation energy Avp and present larger proportion than the initial crack energy Avi in the total absorption energy Av. The number of the pinholes increases and the pinholes turn from smaller irregular ones into sub-circular shape ones. The specimen with irregular sub-circular pinholes has larger KI, and has more crack propagation resistance.

Shock Load Tests of Anti- Vibration Mountings

1957 ◽  
Vol 61 (553) ◽  
pp. 50-52
Author(s):  
Rolt Hammond
Keyword(s):  
Shock Loading ◽  
Testing Machine ◽  
Operating Conditions ◽  
Impact Testing ◽  
Maximum Height ◽  
Peak Acceleration ◽  
Maximum Weight ◽  
Shock Loads ◽  
Load Tests ◽  
The Impact

There are two types of shock loading to which aircraft components are subjected, namely: medium shock loads which can heavily damage equipment; and shocks of high impact, such as those imposed during crash landing, causing the equipment to be torn loose from its mounting, with danger of injury or even death to aircraft personnel.An impact shock machine has been installed recently in a laboratory for studying this important problem. The machine is capable of providing calibrated shock tests up to a maximum peak acceleration of llg, and of simulating the shock loads normally experienced under everyday operating conditions. Apparatus being tested is mounted on a frame bolted rigidly to the table of the impact testing machine, which has been designed to take specimens up to a maximum weight of 400 lb., with maximum overall dimension equivalent to a cube of 30 inches side. A specimen under test is dropped from a maximum height of 5 ft., falling freely.

Dependence of the Head Injury Criterion and Maximum Acceleration on Headform Mass and Initial Velocity in Tests Simulating Pedestrian Impacts With Vehicles

2013 ◽  
Vol 135 (11) ◽  
Author(s):  
T. P. Hutchinson
Keyword(s):  
Head Injury ◽  
Initial Velocity ◽  
Impact Testing ◽  
Nonlinearity Parameter ◽  
Power Functions ◽  
Maximum Displacement ◽  
Maximum Acceleration ◽  
Head Injury Criterion ◽  
Specific Assumption ◽  
The Impact

Impact testing of pedestrian headforms is usually conducted at one velocity and with one mass of headform, but real impacts occur at a range of velocities and masses. A method is proposed to predict the Head Injury Criterion (HIC) and similar quantities at other velocities from their values observed under test conditions. A specific assumption is made about acceleration during the impact as related to displacement, its differential (instantaneous velocity), mass of headform, and initial velocity: namely, that it is the product of a power function of displacement (representing a possibly nonlinear spring) and a term that includes a type of damping. This equation is not solved, but some properties of the solution are obtained: HIC, maximum acceleration, and maximum displacement are found to be power functions of mass of headform and initial velocity. Expressions for the exponents are obtained in terms of the nonlinearity parameter of the spring. Simple formulae are obtained for the dependence of HIC, maximum acceleration, and maximum displacement on velocity and mass. These are relevant to many types of impact.

Mechanical Properties of PVC/ABS Composite Material

2011 ◽  
Vol 217-218 ◽  
pp. 1170-1173
Author(s):  
Wei Wei Qiao ◽  
Hui Wang ◽  
Yan Hua Zhao ◽  
Yi Xia Han
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Testing Machine ◽  
Impact Testing ◽  
Elongation At Break ◽  
Poly Vinyl Chloride ◽  
Maximum Value ◽  
Material Testing Machine ◽  
The Impact ◽  
Butadiene Styrene

We investigate the mechanical properties of Poly Vinyl Chloride (PVC)/ acrylnitrile-butadiene-styrene copolymer (ABS) composite material with an impact testing machine，a material testing machine and other accessory devices. The result shows that the mechanical properties of PVC/ABS composite are a function of composition, the addition of ABS improved the mechanical properties of PVC/ ABS composite，the impact strength and elongation at break rise significantly with increasing ABS content in PVC/ABS composite and appears maximum value，While the tensile strength and modulus almost decrease monotonously with increasing ABS content in PVC/ABS composite.

Impact Damage and Strength Reduction Behavior of Honeycomb Sandwich Structure Subjected to Low Velocity Impact

2006 ◽  
Vol 306-308 ◽  
pp. 279-284
Author(s):  
Ki Weon Kang ◽  
Jung Kyu Kim ◽  
Heung Seob Kim
Keyword(s):  
Sandwich Structure ◽  
Impact Damage ◽  
Testing Machine ◽  
Strength Reduction ◽  
Impact Testing ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Reduction Behavior ◽  
Velocity Impact ◽  
The Impact

The goals of the paper are to identify the impact damage and strength reduction behavior of sandwich structure, composed of carbon/epoxy laminates skin and Nomex core with two kinds of thickness (10 and 20mm). For these, low velocity impact tests were conducted using the instrumented impact-testing machine and damages are inspected by SAM. And then, subsequent static tests are conducted under flexural loading to identify the strength reduction behavior of the impacted sandwich structures. The impact damages are mainly delamination in carbon/epoxy skin and their behavior is mostly independent of core thickness. Also, their energy absorbing behavior is identified through calculating the energy absorbed by impact damage. Finally, the strength reduction behavior is evaluated through Caprino’s model, which was proposed on the unidirectional laminates.

The Key Problems in the Manufacturing of the Bamboo Buffer Packaging Material

2011 ◽  
Vol 306-307 ◽  
pp. 1585-1588 ◽  
Author(s):  
Ye Liu ◽  
Shu Yan Qi ◽  
Zheng Ying Shi
Keyword(s):  
Evaluation System ◽  
Quality Evaluation ◽  
High Efficiency ◽  
Packaging Material ◽  
Raw Material ◽  
Structure And Properties ◽  
Bamboo Pulp ◽  
Bamboo Fibers ◽  
Mechanical Properties Testing ◽  
Quality Evaluation System

In this paper,bamboo pulp was chosen as the raw material on the basis of the researching on the structure and properties of the resource-rich bamboo fibers, the foaming material using the bamboo pulp and other assistants were obtained.It developed bamboo's new applied area and supplied the cushioning industry with a new choice.The best reagent and the optimal ratio of the various components have been identified by the quality evaluation system. Studied on the high efficiency and no polluting foaming mechanism to determine the parameter of foaming technics. Determined the interior adhesive and exterior disposal.Conducted the structural analysis and mechanical properties testing, and in compare with the performance of common cushioning material,we know that: Material has a certain buffer performance and for the packing of the products with small shock fragility.

EFFECT OF ELECTRIC ARC WELDING ON IMPACT OF DIFFERENT MILD STEEL WELD GEOMETRIES

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Vaishak NL ◽  
Suhas Suhas ◽  
Vilas K Bhosle ◽  
Prashanth T
Keyword(s):  
Welded Joint ◽  
Testing Machine ◽  
Low Carbon Steel ◽  
Charpy Impact ◽  
Impact Testing ◽  
Welding Parameters ◽  
Low Carbon ◽  
Electrode Diameter ◽  
Current Electrode ◽  
The Impact

The effect of welding parameters (current, electrode diameter) on the impact of low carbon steel specimens was investigated in this work. Two different geometries namely square butt welded joint and double V welded joint were created. The welding operation was carried out at three different current for welding currents of 90, 110 and 130 amps and electrode diameters of 2.5, 3.2 and 4mm respectively. A Charpy impact testing machine was used to evaluate the impact of the welded samples. It was observed that a low current of 90 Amps for all the welding electrode diameters produced high impact values for both the welding geometries. Also, the 3.2 mm electrode diameter was found to be more suitable for welding the square butt and the double V geometry as it yielded higher impact values. Additionally, the double V geometry showed better performance when compared to the square butt geometry for all the combinations of welding currents and electrode diameters.

The Study of Blanking Frequency Effect on the Acceleration Performance of Impact Testing Machine Rotor

2014 ◽  
Vol 543-547 ◽  
pp. 150-153
Author(s):  
Yuan Bo Cai ◽  
Fang Zhao ◽  
Shi Jian Li ◽  
Na Zhao
Keyword(s):  
High Speed ◽  
Testing Machine ◽  
Impact Testing ◽  
Frequency Effect ◽  
Rotating Speed ◽  
Impact Testing Machine ◽  
Movement Characteristics ◽  
The Impact ◽  
Feed Inlet

This paper designed an impact testing machine to observe the movement characteristics of particles. We simulated the rotor with different blanking frequency and different rotating speed by EDEM to explore the acceleration of the rotor. Through simulation, blanking frequency could have an impact on the rotor acceleration of testing machine, and the greater Blanking frequency was, the more obvious hanging material phenomenon was. Increasing the diameter of feed inlet could ease the phenomenon of hanging material, but would decrease particles speed. Therefore, we should not only avoid the phenomenon of hanging material, but also make the particles get high speed when designing the impact testing machine.

Impact Damage Behavior of Glass/Epoxy Laminates for Railway Vehicle at Low Temperature

2006 ◽  
Vol 326-328 ◽  
pp. 1793-1796
Author(s):  
Ki Weon Kang ◽  
Seung Yong Yang ◽  
J.H. Kim ◽  
Jung Kyu Kim ◽  
Heung Seob Kim ◽  
...  
Keyword(s):  
Composite Laminates ◽  
Impact Damage ◽  
Testing Machine ◽  
Impact Testing ◽  
Low Velocity Impact ◽  
Railway Vehicle ◽  
Low Velocity ◽  
Damage Resistance ◽  
Damage Behavior ◽  
The Impact

This paper deals with the damage behavior of glass/epoxy composite laminates subjected to low-velocity impact at various temperatures. For this goal, the impact tests were performed by using an instrumented impact-testing machine at three temperatures: +20°C, -10°C and -40°C. And the resultant damages were inspected through the scanning acoustic microscope (SAM). Also, based on the impact force history and the damage configuration of the laminates, the impact resistance parameters were employed to evaluate damage resistance of glass/epoxy laminates. As results, it was found that the temperature changes affect the damage resistance capacity of glass/epoxy laminates.

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