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Department of Mechanical Engineering, Salman bin Abdulaziz University, Alkharj, KSA.
Considering the Jacobian matrix of a robot manipulator, the condition number is an error amplifying factor of actuators, so affecting the accuracy of the Cartesian velocity of the gripper.
In order to achieve a global property of the manipulator, the global conditioning index (CGI) is used.
In order to achieve a global property of the manipulator, the following adaptation is used.
Dou, Optimum design of a 3-RRR planar parallel manipulators, Journal of Mechanical Engineering Science, 224 (2010) 411-418

Three factors were determined as a starting point and were compared at two levels.
Also, the interactions of more factors apart from the Operator and Part can be evaluated.
Such factors can adversely affect the experimental results and therefore, must be minimized or removed.
Replication means repetitions of an entire experiment or a portion of it, under more than one condition and this has two important properties [18].
Three factors were examined at two levels and it was discovered thus: A) Temperature: A Boxplot of the characteristics of the data acquired for both Zeiss and Equator reveals that one of the automatic measurement systems is more affected by temperature variations.

Petersen et al. [3] have analyzed product development using firm dependent decisions factors such as product quality and process selection and a SC design factor.
They differ in formability, weldability, corrosion resistance, and hardness properties.
The major factors that influence AA process selections are classified into three categories: material factors (mechanical and physical properties, alloy specification), geometry factors (part shape, envelope size, weight, dimensional tolerance, surface finish, secondary operations) and production factors (lead time, production volume and rate) [11].
These factors can be viewed as a forward design factors as it focuses on SC forward material flow activities.
In a context of a CLSC, it is necessary to consolidate these factors with the reverse logistics design constraints.

As fans and compressor disks of jet are continually exposed to long-term cyclic loading during use and high cycle fatigue properties are therefore of great interest.
Papakyriacou and co-workers[20] show that fatigue properties of Ti-6Al-7Nb alloy are almost similar at 100 Hz and 20 kHz.
The influence of frequency on the fatigue properties of alloys is rather complicated.
Qian, Essential characteristic and influential factors for very-high-cycle fatigue behavior of metallic materials, ACTA METALLURGICA SINICA, 45 (2009) 769–780
Stanzl-Tschegg, Influence of loading frequency on high cycle fatigue properties of b.c.c. and h.c.p. metals, Materials Science and Engineering: A, 308 (2001) 143-152

Furthermore, PLA has high mechanical properties and easy to process.
Nonetheless, the drawback of low degree of crystallinity could cause the undesired properties.
Thermal Properties Investigation.
Oksman, Plasticized Polylactic Acid Nanocomposite Films with Cellulose and Chitin Nanocrystals Prepared Using Extrusion and Compression Molding with Two Cooling Rates: Effects on Mechanical, Thermal and Optical Properties, Composite: Part A 83 (2016) 89-97
Zhou, Nanocomposites of Poly(l-lactide) and Surface-Modified Chitin Whiskers with Improved Mechanical Properties and Cytocompatibility, Eur.

Nevertheless, few researches investigated the relationship between these properties.
In addition to porosity evaluation, the rheological properties of raw materials have shown links to the technological properties of bricks in their final state.
Rheology deals with the viscoelastic properties of matter.
Rovnaník et al. [17] prepared and studied in terms of mechanical and rheological properties a binary geopolymer system used as cementing material composed of metakaolin and waste red brick powder.
Fig. 5 and fig. 6 show the loss factors of the prepared suspensions, with 40 and 50 wt.% water content, respectively.

Introduction A201aluminum alloy has the highest mechanical properties among all the cast aluminum alloys, and which is also an important structural material used in aerospace industry and military area.
Chang, “The Study of Castability And Mechanical Properties of High Strength A201 Aluminum Alloy,” CSIST Report (1989) [2] Y.S.
Kuo, “The Influence of Cooling Rate on the Mechanical Properties and Porosity Content of High Strength Aluminum Alloy Castings ”, Foundry Technology (Zhuzao Jishu) , Vol.29, No.11, (Nov. 2008) 1513-1517
Hatch, “Aluminum Properties and Physical Metallurgy” ch.6, ASM (1984) [6] ASM Metals Handbook “Castings” Vol.15 9th.
Panchanathen, “Section Feeding Efficiency Factor － A New Parameter for Soundness Evaluation,” AFS Transactions Vol.82, (1974), 165-168

The damage caused by blasting vibration on rock mass is an extremely complex process, and has certain impact on the mechanical properties and bearing capacity of the rock, which will affect the overall stability and safe operation of the construction.
Blasting is an extremely complicated process, which is influenced mainly by the factors of blasting vibration velocity, frequency and duration.

And the temperature change in finishing zone is a complex heat exchange process involving a plurality of influence factors.
But, in the actual production process, the rolling temperature depends not only on the empirical or semi-empirical formula, but also on different kinds of steel, roller material, temperature of the cooling water, and working environment factors.
Optimize the Heat exchange coefficient with PSO Through the above analysis, the contact heat transfer coefficient, air cooled coefficient and water-cooled coefficient in the model are the most important factors.
[2] GONG Dian-yao, XU Jian-zhong, LIU Xiang-hua, WANG Guo-dong, “Influencing Factors on Finishing Temperature of St rip During Continuous Hot Rolling,” Journal of Northeastern University Natural Science, 2006, Vol.27(7), p.763-767
[7] TAN Wen, LIU Zhen-yu, WU Di, LIU Xiang-hua, WANG Guo-dong, “Optimization of Processing Parameters-properties Using Particle Swarm Optimization (PSO) in Hot Plate Rolling,” Steel Rolling, 2007, Vol. 24(1)

Vaidya [4-8] studied the mechanical properties of X-cor sandwich under impact loads and used the finite element method to simulate the impact process.
At home the research about X-cor sandwich began in 2003, Xu Tian[9] developed the study of molding process and basic mechanical properties of X-cor sandwich.
The resin regions are constraint weakening regions and their structures and ranges greatly affect the mechanical properties of X-cor sandwich.
The elastic properties of Z-pin are listed in Table 1.
Du: A study on mechanical properties of X-cor sandwich (MS., Northwest Polytechnical University, China 2007), p.20-29.