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Rajagopal3 c 1Research Scholar, Dept. of Mechanical Engineering, Jawaharlal Nehru Technological University, Kutkatpally, Hyderabad, A.P, India. 2 Dept. of Mechanical Engineering, Sri Sai Ram Institute of Technology, West Tambaram, Chennai, India. 3Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Kutkatpally, Hyderabad, A.P, India aseenusreeja@gmail.com, bpalanikumar_k@yahoo.com, crajagopalmail@yahoo.com Keywords: Glass fiber, thermoplastic matrix, drilling, delamination.
The life of the joining can be critically affected by the quality of the drilled holes.
The material system should preferably be designed for specific end use (tailoring) necessitating a combination of desired properties.
Their high strength to weight ratio, enhanced resistance to environmental hazards, lower density, high fatigue resistance, wear resistance and related properties has widened the range of application leading to large scale substitution of conventional engineering materials for aerospace to consumer goods.
The increase of feed rate increases the delamination factor in drilling.

Polymeric matrix composite materials presents advantages in a great number of applications due to their high specific strength and stiffness, wear resistance, dimensional stability, low weight and directional properties.
As result of these properties and potentials applications exists a strong need to understand the manufacturing processes, particularly the machining process of these composite materials.
Introduction Polyamide composites are applied in several fields of engineering such as aircraft, automobile, robots and machines due to of their excellent properties [1-4].
The mechanical and thermal properties of both materials are described in Table 1.
Machaly, Factors affecting the machinability of GFR/epoxy composite", Composite structures, Vol. 63 (2004), p. 329-338 [5] X.M.

These factors induce residual strain and reduce the in-situ capacity of FRP materials [20].
Types and thickness of FRP confining materials The selection of the type of FRP confining materials and the fiber thickness depends on several factors, such as the required enhancement in compressive strength, peak stress of unconfined concrete that subjected to FRP confinement, as well as the shape and dimension of concrete core.
Shape factors and cross-sectional geometries Circular columns confined with FRP wrap or tube and subjected to axial compression exhibit a uniformly distributed lateral pressure over the cross-section, therefore provide an efficient utilization of FRP materials.
It is also believed that, some other factors may influence the in-situ capacity of FRP materials due to the non-uniform confinement pressure attributed from non-circular sectional shape [38].
However, the small-scale specimens might conceal possible scale effects since the dilation properties of concrete could be influenced by specimen size [40].

During the applying process, the size and morphology of the silver nanoparticles are important factors which influence their properties.
The effects of the morphology of the silver nanoparticles on their properties are discussed, and the further development of their application in solar cells is prospected.
Moreover, the morphology of the reaction product of silver nanoparticles can be controlled by adjusting the microwave power and the heating time and other factors.
In this process, each step will affect the final conversion efficiency of the solar cell.
As can be seen, the size and morphology of the silver particles are the key factors that affect its performance.

Pumice concrete and common concrete properties comparison is shown in Table 2.
The properties of SHSPC on the experimental research are given at list.
Table 4 Properties of SHSPCHB Single block quality [kg] Compressive strength [Mpa] Flexural strength [Mpa] Softening coefficient 15.9 16.5 10.4 0.85 Analysis of the Factors that Effect the Properties of SHSPCHB There are many factors that effect the the properties of SHSPCHB, including the materials own properties, spheroidizing and hole sealing quality, production process control, etc, also curing and using.
Lightweight aggregate gradation affects the shaping quality of hollow blocks.
The mechanical and the thermal performance of SHSPC increases obviously than NSPC.

Results have shown that FCG curve (fatigue life) was affected by level of applied spectrum, consequently striation spacing.
The chemical compositions of studied material and mechanical properties at room temperature were given respectively by table 1 and table 2 and presented in Ref [19].
Table 1 Chemical composition of 2024 T351 Al-alloy Si Fe Cu Mn Mg Cr Zn Ti Ni Pb Al 0.105 0.159 3.97 0.449 1.5 0.05 0.109 0.018 0.02 0.056 Bal Table 2 Mechanical properties of 2024 T351 Al-alloy E (GPa) s0.2 (MPa) UTS (MPa) A (%) 74 0.159 3.97 0.449 The fatigue tests are performed on V-notch specimens with 45° angle in four bending.
At R=0.5, the fatigue life is affected by the amplitude of loading, where a decrease in number of cycles is significant [20].
Matsunaga: Transaction B-Mechanical Engineering Vol. 17(1) (2010), p. 75

The aim of this study is to show the excellent mechanical properties of the composite wires, and the contact relationship between the mechanical and other properties (i.e. thermoelectric power) and the possibility of their standardized production.
So it was also worth trying other metals as matrix materials to see any existing differences in mechanical properties.
The other factors needing consideration were the handling properties (castability, fluidity, etc.)
After these factors had been considered, it was tin that was chosen as the matrix metal, owing to its low melting point (232 °C) and good fluidity.
General conclusions are that composite wire reinforcement improves the mechanical properties of specimens.

China Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education, P.
In case-based reasoning system, the weight distribution of cases properties must be considered when the similarity needs to be calculated between a new machining case and cases in the case-base.
The weight determination of cases properties plays an important role in the process of case retrieving, case revising and case retaining.
The fuzzy comprehensive evaluation is one of the widely used tools under the condition that the object is affected by various uncertain factors[7].The comprehensive weights of different cases properties can be obtained by using two-level fuzzy comprehensive evaluation after analyzing factors affecting high-speed machining.
It’s used to save the information such as the material of the workpiece, the material components and parameters associated with workpiece material properties such as hardness and elastic modulus.

The micromechanical properties of precipitating CaCO3 by different bacteria are the same.
Its biggest disadvantage is that the bacteria need urea during self-healing by the precipitation of CaCO3, which negatively affects the resulting mechanical properties of cementitious materials [11].
Mechanical properties of cementitious materials were assessed by means of nanoindentation.
Spontaneous crystallization of the culture medium led to an increase in micromechanical properties.
In addition, micromechanical properties of individual phases will be tested without affecting the surrounding phases, and the effect of the self-healing agent on micromechanical properties at the interface between cementitious materials and the crystallized self-healing agent will be studied.

(B.Ramesh, 2013) stated that the mechanical properties of laminated composites were comparatively better when compared to non-laminated composites.
Lightness, toughness and flexibility are the physical properties of the GFRP.
(Anuj kumar sehgal, 2013) found that the properties of ductile iron was found to satisfy the customer needs.
(M.Saktivel, 2014 & 2015) inferred that the mechanical properties of Polymer composite materials are being extensively used in industries.
It is observed that feed rate affects more than the other factors while drilling pure epoxy material, resin hybrid laminates (80% epoxy and 20% polyester) and resin hybrid laminates (60% epoxy and 40% polyester).