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Drilling is always required in joining two complex parts of FRP composite using mechanical fastening such as screw, rivet and pin joint.
However, this secondary work may affect the strength and life span of the structure due to the anisotropic nature of FRP composite laminate.
Table 1 shows the physical and mechanical properties of HFRP composite laminates produced in this study.
Physical and Mechanical Properties of HFRP Composite Laminates ASTM Standard Properties Test ASTM D 0792 – 00 Density [g/cm3] 1.66 ASTM D 3173 – 00 Fiber Volume Fraction [%] 47 ASTM D 3039 – 00 Tensile Strength [MPa] 404 ASTM D 2344 – 00 ILSS [MPa] 62 ASTM D 0790 – 03 Flexural Strength [MPa] 72 Drilling HFRP Composite Laminates.
Hocheng : International Journal of Mechanical Tools and Manufacture, 45 (2005) 1261 – 1270.

Mortar and concrete are composite whose overall mechanical properties are affected by properties and arrangement of each constituent (cement, aggregate) in it.
By incorporating nano-materials into matrix to improve mechanical properties emerged as a promising research field of nano-composite.
In view of the above-mentioned, cement mortars mixed with nano-pigment have been studied by the authors to explore their mechanical properties.
Influence of nano particles on durability and mechanical properties of high performance CONCRconcerete.
Investigations on the preparation and mechanical properties of the nano-alumina reinforced cement composite.

This paper focuses on the mechanical properties of galvanized iron wire under various conditions of earthquake-type strain rate.
Dynamic mechanical properties of reinforcing steel are widely illustrated and discussed in literature [1-2].
The dynamic mechanical properties of galvanized iron wire were investigated.
Fig. 4 Comparison of yield strength increasing factor of the proposed model and the other models Fig. 5 Comparison of tensile strength increasing factor of the proposed model and the other models Conclusions Based on the previous test results obtained, the following observations can be drawn on the earthquake-type strain rate on the dynamic mechanical properties of galvanized iron wire
The dynamic mechanical properties of galvanized iron wire are similar to reinforcing steel.

The microstructure and mechanical properties of the 7085 ingot casting was tested by OM, SEM and EDS, the fatigue damage was observed in the driving test process, the temperature gradient distribution was adjusted observably by using the FEM simulation analysis.
In the present study, the pouring temperature, which is one of the primary factors associated with the solidification sequence, is selected to studying its effect on the solidification temperature tonsure distribution, microstructures and mechanical properties of 7085 ingot casting under gravity filling process[13,14].
Fig. 4 The mechanical properties analysis of test samples: (a) tensile strength; (b) yield strength; (c) elongation; (d) brinell hardness 3.2 Microstructures Fig.5 shows the optical microscopy test results of 7085 ingot casting, the average grain size is 42μm, the Al2Cu and eutectic phase were distributed nearby the grain boundary.
Fig.12 shows the FEM simulation results of the solidification phase distribution in the process, the microporosity distribution and mechanical properties test results of the improved casting process was shown in Fig.13.
Fatigue induced alteration of the superficial strength properties of 2024 aluminum alloy, Journal of Materials Science Technology. 2011,27(9):776-784

Fatigue property of FSW butt joints is sensitive to the microstructural features, such as nugget zone (NZ), thermo mechanically affected zone (TMAZ) and heat affected zone (HAZ).
The weak-bonding defects have obvious influence on the fatigue properties of friction stir welding.
Some researchers studied the mechanical properties of 6156 aluminum alloy in various aging states and different stress ratios [5,6].
Table 2 indicates mechanical property of 6156-T6 aluminum alloy.
Effects of two-step aging treatment on microstructure and properties of 6156 aluminum alloy.

These excellent mechanical properties may be caused by the finely dispersed retained austenite and refined bainitic ferrite and/or martensite brock by thermomechanical rolling process.
In general, thermomechanical treatment is effective for improving the mechanical properties and microstructure of steels.
The tensile properties of the TBF and TM steels are listed in Table 3.
Tensile properties of TBF and TM steels with/without hot/warm rolling.
Dong, Microstructure and mechanical properties of Fe-0.2C-5Mn steel processed by ART-annealing, Mater.

First, this paper analyzes factors that affect the demand for spare parts.
Analysis of factors affecting the demand for spare parts The demand for agricultural machinery spare parts is affected by many factors, such as its own property, region, market and so on.
Parts’ failure rate can be very low due to its stable mechanical properties within their normal lifetime.
Geographical factors.
Steps and processes of neural network forecast BP neural network prediction model will be established based on influence factors, with the inputs being the factors affecting the demand for spare parts, and the ouputs being the demand.

Compared with pure gypsum, gypsum mixture had better mechanical properties.
The fluidity of metals and alloys are important factors to affect the ability of filling [6-8].
The Pb-Sn alloy liquidity properties in gypsum mold was also investigated.
The length of Spiral sample in experiment indicated the main factors affecting alloy flow performance, including chemical composition, pouring temperature and pouring methods of alloy.
Liquidity of Pb-Sn alloy in the cast was restricted by many factors such as alloy ratio, casting pressure and pouring temperature.

Mechanical properties of automotive instrument panels with semi-rigid foam Rong Cheng1,a 1.
This article was prepared by one-step car instrument panel with semi-rigid polyurethane foam, through the design of the four factors and three levels orthogonal test program, using Fourier infrared spectroscopy to characterize its structure, measuring its apparent density and hardness properties of transformation, the combination of research influence of the proportion of polyether foam system.
Instrument panel as a large, complex, unique and exquisite cars and interior parts, which combines safety, comfort features, decorative and functional performance in one of these properties directly affect the evaluation of vehicle classes.
In this study, the focus on the water, the ratio of polyether chain extender and the isocyanate index of the overall performance of the polyurethane foam prepared by the influence of that of the four factors affect the semi-rigid polyurethane foam systems.
While each of the three levels of the variable factors.

The structural properties of camshaft were affected by many factors such as pouring temperature and inoculation which were studied in this paper.
The development of automobile industry and engine power brings up more advanced requirement for the properties of camshaft.
Many factors such as foundry technique, primary materials, pouring temperature, component of molten metal, inoculation, and so on [8-11] affecting the properties of camshaft.
With the increase of pouring temperature, a large scale of A-type graphite obtained which is beneficial to the mechanical properties of camshaft [12, 13].
Si-Ba is a kind of long lasting inoculant; it can be used as inoculant in camshaft for its excellent properties, such as weak chilling tendency, weak fracture sensibility and helpfulness to increase the mechanical property [14, 15].