Khairul Azwan Ismail, Associate Professor Dr.Director of Development Departmenthttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/399992024-03-29T06:17:37Z2024-03-29T06:17:37ZA new invention method to determine the reduction factor for low fabric tension properties for head garment fabricationMuhammad Aiman, Ahmad FoziMohamed Najib, SallehKhairul Azwan, Ismailhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/691482020-12-23T09:21:12Z2016-01-01T00:00:00ZA new invention method to determine the reduction factor for low fabric tension properties for head garment fabrication
Muhammad Aiman, Ahmad Fozi; Mohamed Najib, Salleh; Khairul Azwan, Ismail
This paper proposes a new method to determine the reduction factor for producing a head garment with specified targeted pressure output. Pressure garment fabric mostly supplied to the local hospitals with no information of the material properties and the fabrication method generally used a single reduction factor at various body segments. Reduction factor defined as the percentage of reducing the garment size from the original circumference of the body part which contributes to the compression. The objective of this study is to compare the fabrication method of head garment using reduction factor equation from previous research with the new proposed method. The equation to predict the reduction factor requires the parameter of the fabric tension which is obtained from tensile test and radius of curvature of the human body parts. In the new proposed method, a 3D scanning was used for data acquisition to obtain the geometry of the head area. The pressure outputs are measured by a pressure measurement system developed from Flexiforce sensor and Arduino circuit board. By using the equation, the result shows the calculated reduction factor produced an extremely tight head garment compared to the conducted experiments which manage to produce an adequate reduction factor with a targeted pressure output of 20mmHg. The result of the experiment indicates that the reduction factor ranging from 17% to 23% compared to the equation which produces 20% to 47% of reduction factor. As an additional, the proposed experimental method can be used for different type of pressure garment fabrics in order to obtain the relationship between the reduction factor and the circumference of the body parts.
Link to publisher's homepage at https://www.matec-conferences.org/
2016-01-01T00:00:00ZPressure distribution from two different types of fabrics head garments with Silon-LTS® face mask for hypertrophic burn scar treatmentMuhammad Aiman, Ahmad FoziSalleh, M.N.Khairul Azwan, Ismailhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/443302016-12-03T03:58:59Z2015-09-01T00:00:00ZPressure distribution from two different types of fabrics head garments with Silon-LTS® face mask for hypertrophic burn scar treatment
Muhammad Aiman, Ahmad Fozi; Salleh, M.N.; Khairul Azwan, Ismail
This study measures and analyses pressure generated from the two different fabrics used as head garments with a face mask made from Silon-LTS® (Low Temperature Splinting) underneath the head garment. A pressure sensor was used to measure the pressure generated using a head mannequin. In addition, modulus of elasticity is determined from the standard tensile test for fabric. The results shows that modulus of elasticity of the fabric gives the different pressure output and by applying the Silon-LTS® face mask underneath the head garments, the pressure increases at certain areas.
Link to publisher's homepage at http://ieeexplore.ieee.org/
2015-09-01T00:00:00ZFoam filling effectiveness of conical aluminium tubes under dynamic axial and oblique loadingFauziah, MatKhairul Azwan, Ismail, Professor Madya Dr.Masniezam, AhmadM. R. M., Rejabhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/440332016-11-17T04:40:35Z2016-06-01T00:00:00ZFoam filling effectiveness of conical aluminium tubes under dynamic axial and oblique loading
Fauziah, Mat; Khairul Azwan, Ismail, Professor Madya Dr.; Masniezam, Ahmad; M. R. M., Rejab
This paper presents the behaviour of empty and foam-filled conical aluminium tubes under dynamic axial and oblique loading. The effect of foam filling on the energy absorption for variation in geometrical parameter and filler density was evaluated and discussed. This study employs a nonlinear finite element model which was validated against experiment data. The validated model was subsequently used to assess the beneficial of foam filling with respect to the variation of geometry and filler density. The identification of Critical Effective Point (CEP) with the approach taken in varying the semi apical angle and by keeping the bottom diameter constant are advantageous to enhance the Specific Energy Absorption (SEA) of foam-filled tube over that of empty tube. These approaches are however, apply to only particular combination of geometrical parameters and filler density thus highlights the importance of appropriate selection of these parameters in achieving efficient performance of energy absorber particularly under dynamic axial loading. The information established in this study will facilitate the future development of thin-walled tubes for impact applications.
Link to publisher’s homepage at www.arpnjournals.com
2016-06-01T00:00:00ZAn experimental and numerical analysis of empty and foam-filled aluminium conical tubes under oblique impact loadingFauziah, MatKhairul Azwan, IsmailSazali, Yaacobhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/437962016-10-25T06:45:11Z2013-01-01T00:00:00ZAn experimental and numerical analysis of empty and foam-filled aluminium conical tubes under oblique impact loading
Fauziah, Mat; Khairul Azwan, Ismail; Sazali, Yaacob
This paper presents the crushing behaviour of empty and foam-filled conical aluminium alloy (AA6061-T6) tubes under oblique impact loading using a validated nonlinear finite element (FE) code, LS-DYNA. The study aims to assess the beneficial of foam filling on the energy absorption in terms of mass reduction, for variations in filler density and geometrical parameters of AA6061-T6 tubes. The results obtained successfully identified the critical tube mass and critical foam density. It is evident that foam filling successfully induced high Specific Energy Absorption (SEA) value of foam-filled tubes thus proving that the assessment of critical total tube mass and critical foam density point is vital in identifying proper combination of tube-filler to the effectiveness of foam-filled tubes. The combination of AA6061-T6 tube and aluminium foam demonstrates pronounced SEA increase as high as 72.3% compared to the empty tube.
Link to publisher's homepage at http://www.ttp.net/
2013-01-01T00:00:00Z