Numerical Analysis of the Crack Inspections Using Hybrid Approach for the Application the Circular Cantilever Rods

Raheemah, Saddam Hussein; Fadheel, Kareem Idan; Hassan, Qais Hussein; Aned, Ashham Mohammed; Al-Taie, Alaa Abdulazeez Turki; Sharaf, Hussein Kadhim

doi:10.47836/pjst.29.2.22

Cited by 14 publications

(12 citation statements)

References 18 publications

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“…As ' represent the eigen roots of the matrix ′ ,2 3 )*+ and ' [ )*+ represent the largest component of 2 3 \ and ' \ respectively. The third estimator was based on the idea of agencies [23], [24] : The fourth estimator was proposed as follows [25] :…”

Section: Resultsmentioning

confidence: 99%

Employing Several Methods to Estimate the Generalized Liu Parameter in Multiple Linear Regression Model

Alsharabi¹,

Al-Mola²,

Yonan³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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Multiple linear interferences are a fundamental obstacle in many standard models. This problem appears as a result of linear relationships between two explanatory variables or more. Simulation results show that the generalized Liu regression model was the best and that the contraction parameter proposed was more efficient than the methods presented. As the error variance increases, the value (MSE) increases. When this problem exists in the data, the estimator of the ordinary least squares method will fail because one of the basic assumptions of the method has not been fulfilled. The normal least squares, which state that there is no linear correlation between the explanatory variables, will not get an estimator with the Best Linear Unbiased Estimator (BLUE) feature. The least-squares regression method and the generalized Liu regression method were compared by taking several methods for the generalized Liu parameters and selecting the best contraction parameter for the Liu regression model. The study aims to address the problem of multiple linear interferences by using the general Liu estimator and making a comparison between the methods for estimating the Liu parameter, where several methods were presented, and the best method for estimating the Liu parameter was chosen according to the standard of the sum of error squares as well as a comparison between these methods and the conventional method. Simulation results showed that the generalized Liu coefficient estimate was the best for having the lowest values (MSE) and that the best shrinkage parameter is (G4), the work-based approach.

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Section: Resultsmentioning

confidence: 99%

Employing Several Methods to Estimate the Generalized Liu Parameter in Multiple Linear Regression Model

Alsharabi¹,

Al-Mola²,

Yonan³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…The mechanical properties of various natural fiber composites were evaluated and compared. Glass-reinforced open-literature polypropylene composites have similar properties to polypropylene composites [8]. The modulus and tensile strengths of composites made from sisal, kenaf, and hemp are all very similar.…”

Section: Introductionmentioning

confidence: 84%

Analysis of the natural composite material layers influence on the cantilever’s structural performance

wazir¹

2022

EEJET

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In this study, with their high strength-to-weight ratio, adaptability, and lack of corrosion, composite materials are widely used in aircraft construction and can be considered an acceptable metal substitute by all parties involved. Static load tests have been performed under identical conditions and stresses, but the layer sequence was changed. The Ansys workbench ACP-pre is utilized to analyze the data. Various deformations were found as a result of this. There are values of 14.265 and 0.1335 for the smallest z-direction deformation and for the overall strain in the composite 3 examples. Boundary conditions have been confirmed with 1,500 N as a resultant force with the static condition. The simulation results have been analyzed as a static condition. Four materials have been employed in different order to be investigated and these materials are Sisal, Pineapple, Jute, and Kenaf. The numerical results have been undertaken using the static structure of Ansys 16.1 Version tool. Geometry has been modeled and meshed using Ansys workbench. The model has been verified using convergence test. As the output, total deformation and von Mises stresses were investigated and explained accordingly. Numerical results stated that the maximum deformation due applied load was at the Z-axis. The maximum total deformation value is 1.254 mm and the minimum is 2.5 mm. Furthermore, von Mises stresses of the entire body have been calculated. The numerical results have shown the maximum result due to 1,500 N is 1.1 mPa. Eventually, the main aim has been achieved by employing total deformation and von Mises stresses accordingly

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“…Shoe choice affects end-user devices clinically tailored for patient mobility and health state but has received less attention in the academic literature due to its influence on the mechanical prosthetic foot function according to [17]. The results of [18] show that clinicians do not know if their patients are getting the full advantage of prosthetic devices so that they can maximize their rehabilitation potential. Standard guidelines for the classification of prosthetic feet based on their functional properties have recently been established, and these standards have been utilized to help interpret the results of biomechanics comparative studies.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Investigation of the mechanical performance of the composite prosthetic keel based on the static load: a computational analysis

Subhi

Hussein

Al-Hamadani

et al. 2022

EEJET

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In this paper, the numerical simulation of the mechanical performance of a composite prosthetic keel structure under static load has been explored, and the findings of this inquiry have been included. The prosthetic keel is constructed from an epoxy and glass fiber composite, 3 percent weight (MWCNTs with SiC), and a carbon nanotube, which are utilized in conjunction with other materials to create the structure. The force that is applied in this example is 1,000 N, and it is applied in accordance with the boundary condition that has been previously established in this case. The ANSYS modeling software package was used to create the prosthetic keel model, which was meshed and created. Because of the total deformation, the fundamental simulation results of the prosthetic keel model have been converged in line with the total deformation, which was used as a reference to determine the total deformation. The major outcome of the current numerical analysis has been successfully validated by considering the findings of the earlier experimental study. The mechanical performance of the composite prosthetic keel structure is determined by four primary criteria, the results of which are based on the findings. Aspects to analyze include equivalent elastic strain, three-axis directed deformation, total deformation, and equivalent stress (von Mises). Although only 0.00058 mm total deformation is created by the imposed static load of 1,000 N (the least attainable value), it represents the largest total deformation. The equivalent stress (von Mises) responded to the load with a response of 0.045 MPa, which is quite small. Furthermore, the equivalent elastic strain has also been undertaken and it resulted in a value of elastic strain of 3.4*10^7.

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Numerical Analysis of the Crack Inspections Using Hybrid Approach for the Application the Circular Cantilever Rods

Cited by 14 publications

References 18 publications

Employing Several Methods to Estimate the Generalized Liu Parameter in Multiple Linear Regression Model

Employing Several Methods to Estimate the Generalized Liu Parameter in Multiple Linear Regression Model

Analysis of the natural composite material layers influence on the cantilever’s structural performance

Investigation of the mechanical performance of the composite prosthetic keel based on the static load: a computational analysis

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