Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Articles by M.F. Abdullah
Total Records ( 2 ) for M.F. Abdullah
  S. Abdullah , M.F. Abdullah , A.K. Ariffin and A. Jalar
  The copper-based leadframe is practically proven effective in the thermal and reliability of a Quad Flat No Lead (QFN) three dimension (3D) stacked-die semiconductor package. Reducing the copper thickness is understood to present various thermal and reliability failure mode and mechanisms, such as die cracking and delamination. However, no in-depth study has been pursued in order to determine the capability of achieving the product requirements in terms of thermal and reliability in a 3D stacked-die package. The drive towards a Die-Free Package Cost (DFPC) reduction has led the authors to study the used of a thin leadframe in a QFN 3D stacked-die. Hence, the work presents basis for the qualification of a thin leadframe design and also to demonstrate the thermal and reliability performance. Finally, an extensive virtual thermal-mechanical prototyping has to be achieved in order to understand the physics of materials during the assembly and reliability testing of a 3D stacked-die package with a thin leadframe. This design rule was found to be developed in order to prevent a die crack occurrence between die and leadframe in the semiconductor package.
  N.A. Rahma , S. Abdulla , W.F.H. Zamr , M.F. Abdullah , M.Z. Omar and Z. Sajuri
  his study presents the computational-based ballistic performance of metallic panel using different constitutive material models. Finite element model of metallic panel was constructed using a commercial software package reliable for high velocity impact. Three different constitutive models were utilized in the finite element analysis: Cowper-Symonds, Johnson-Cook and Zerilli-Armstrong model. The target steel panel was subjected to projectile velocity in a range of 750 msec–1- 950 msec–1 and the residual velocity resulting from each constitutive model was quantified and compared with data from previous experiment. Cowper-Symonds model exhibited largest percentage difference of 10.3 and Johnson-Cook model was fitted the best with the experimental data at percentage difference of 1.9. This finding will be later used for investigating the performance of various types of metallic materials under high velocity impact.
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility