Jig Prototype for Computer-Assisted Total Knee Replacement and Its Flow Simulation

Sulong, Abu Bakar; Arifin, Amir; Harun, Zambri

doi:10.14716/ijtech.v7i1.2115

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The 27° bevel angle of the introducer tip used to decrease the deflection result from inserting the needle into the skin tissue (Jushiddi et al, 2019). Stainless steel alloys have been used in the orthopedic implant (Jujur et al, 2015;Saini et al, 2015) and medical equipment (Tsen and Hepner, 2006;Bakar Sulong et al, 2016). In this study, AISI-grade-304 stainless steel (SS304) was used as the material due to its superior resistance to corrosion (Black et al, 2017), and it has been extensively implemented as hypodermic needles and surgical equipment (Lingadurai et al, 2012).…”

Section: Design Considerationmentioning

confidence: 99%

Material Selection Techniques for Polymer Hubs of Novel Spinal Stem Cell Introducers using Finite Element and Weighted Property Method

Irsyad¹,

Nadhif²,

Rahyussalim³

et al. 2020

IJTech

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Stem cell studies have progressed significantly in the last decades. Similarly, stem cell therapies have also been applied in clinical settings, includingthe spine. However, stem cells' delivery to the spinal region requires delicate procedures, demanding reliable introducers in addition to the surgeons' psychomotor skills. The introducer is a tubular sleeve to guide a syringe needle to deliver and draw fluids into and from the body, respectively. To date, there is no introducer dedicated to spinal stem cell deliveries. Our group proposed a dedicated introducer for spinal stem cell therapies, which consists of a needle and a hub (a base part of an introducer for gripping and handling). We focused onthe weighting property method (WPM) to select four polymer candidates for the hub:polystyrene, polycarbonate, polypropylene, and polyethylene. Prior to WPM, the mechanical integrity of the hub candidates was analyzed using the finite element method to determine the von Mises Stress (vMS) values. Accordingly, the vMS for each case and the material was compared with the respective tensile strength (TS), thereby vMS:TS ratio (MTR).MTR was included as one of the properties in WPM, in addition to prices, critical radiation doses, hardness, water absorption, and isopropyl alcohol resistance.According to the WPM calculation, polycarbonate received the highest score, thereby recommended for further introducer fabrications.

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Section: Design Considerationmentioning

confidence: 99%

Material Selection Techniques for Polymer Hubs of Novel Spinal Stem Cell Introducers using Finite Element and Weighted Property Method

Irsyad¹,

Nadhif²,

Rahyussalim³

et al. 2020

IJTech

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Cad Tools and File Format Performance Evaluation in Designing Lattice Structures for Additive Manufacturing

Azman¹,

Vignat²,

Villeneuve³

2018

Jurnal Teknologi

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Additive manufacturing has opened the door to the creation of lightweight lattice structures. However, present Computer-Aided Design (CAD) and Computer-Aided Engineering (CAE) software are unsuitable for these types of structures. The objective of this research is to examine the performances of current CAD and CAE software to design lattice structures and to demonstrate their limitations and propose requirements for future developments. A performance evaluation of a case study for lattice structure designs was conducted. The criteria used for the evaluation were CAD human-machine-interface, RAM consumption, data exchange between CAD, CAE and CAM tools and finite element analysis (FEA) duration and file sizes. The CAD tool was incapable of executing a repetition function for octet-truss lattice structures of 150 x 150 x 150 mm dimensions or larger and the software stopped working. For 70 × 70 × 70 mm octet-truss lattice structure, the FEA computation ﬁle size reached 36.6 GB. The CAD file size of a 200 x 200 x 200 mm octet-truss lattice structure reached nearly 290 MB. In conclusion, this study exposes the performance inadequacy of current CAD and CAE tools and CAD file formats to design lattice structures for additive manufacturing parts.

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Evaluation of computer network security using attack undirected geography

Jittawiriyanukoon¹

2019

IJEECS

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<span>To secure a wealth of data traversing the computer network at your fingertips is compulsory. But when attack arises at various parts of the network it is difficult to protect, especially when each incident is investigated separately. Geography is a necessary construct in computer networks. The analytics of geography algorithms and metrics to curate insight from a security problem are a critical method of analysis for computer systems. A geography based representation is employed to highlight aspects (on a local and global level) of a security problem which are Eigenvalue, eccentricity, clustering coefficient and cliques. Network security model based on attack undirected geography (AUG) is familiarized. First, analysis based upon association rules is presented then the attack threshold value is set from AUG. The probability of an individual attack edge and associated network nodes are computed in order to quantify the security threat. The simulation is exploited to validate that results are effective.</span>

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Jig Prototype for Computer-Assisted Total Knee Replacement and Its Flow Simulation

Cited by 3 publications

References 16 publications

Material Selection Techniques for Polymer Hubs of Novel Spinal Stem Cell Introducers using Finite Element and Weighted Property Method

Material Selection Techniques for Polymer Hubs of Novel Spinal Stem Cell Introducers using Finite Element and Weighted Property Method

Cad Tools and File Format Performance Evaluation in Designing Lattice Structures for Additive Manufacturing

Evaluation of computer network security using attack undirected geography

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