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STM JOURNALSScientific Technical Medical
May - August 2014
Journal of Experimental
& Applied Mechanics
ISSN: 2321-516X
(JoEAM)
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Puneet Pandeya
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Publication Management Team
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Dr. Bimlesh Lochab
Industrial Tribology Machine Dynamics & Maintenance
Engineering Centre (ITMMEC)
Indian Institute of Technology Delhi, India
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Alternative Energy Technology Laboratory,
Department of Physics,
Indian Institute of Technology, Chennai, India
Dr. Rajiv Prakash
School of Materials Science and Technology,
Institute of Technology, Banaras Hindu University,
Varanasi, India
Dr. Rakesh Kumar
Assistant Professor, Department of
Applied Chemistry, BIT Mesra,
Patna, India
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Gargi Asha Jha
Nupur Anand
Priyanka Aswal
Sona Chahal
STM Journal (s) Advisory Board
Dr. Ashish RunthalaLecturer, Biological Sciences Group,
Birla Institute of Technology & Science, Pilani Rajasthan, India.
Dr. Baldev Raj
Former Director, Indira Gandhi Centre for Atomic Research, India.
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of Civil Engineering National Institute of Technology Trichy, India.
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Chandigarh, India.
STM Journal (s) Advisory Board
STM Journal (s) Advisory Board & Editorial Board
Dr. Yuwaraj Marotrao GhugalDepartment of Applied Mechanics,
Govt. College of Engineering, Vidya Nagar, Karad, District Satara -
415124, Maharashtra, India.
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Chennai - 600 036, India, India.
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Hydro-Environmental Research, United States.
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Department, MS College, Saharanpur, U.P., INDIA.
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Engineering, Pondicherry Engineering College, Pondicherry, India.
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Civil Engineering, Shreeyash College of Engineering & Technology,
Aurangabad (Maharashtra), India.
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Mechanical Engineering, BCET Gurdaspur, Punjab, India.
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Institute of Technology, Hyderabad, India.
Dr. P. Ravinder ReddyProfessor & Head, Dept. of Mech.
Engg, Chaitanya Bharathi Institute of Technology,Hyderabad,(A.P), India.
Dr. G. Chandra Mohan ReddyProfessor of Mechanical Engg.,
Principal - M G I T Chaitaya Bharathi(p.o), Gandipet,
Hyderabad, India.
Dr. Pardeep KumarProfessor of Mathematics, ICDEOL,
H.P.University, Shimla, India.
I take the privilege to present the hard copy compilation for the [Volume 5 Issue (2)] of Journal of
Experimental & Applied Mechanics. The intension of JoEAM is to create an atmosphere that
stimulates creativeness, research and growth in the area of Experimental & Applied Mechanics.
The development and growth of the mankind is the consequence of brilliant Research done by
eminent Scientists and Engineers in every field. JoEAM provides an outlet for Research findings and
reviews in areas of Experimental & Applied Mechanics found to be relevant for National and
International recent developments & research initiative.
The aim and scope of the Journal is to provide an academic medium and an important reference for
the advancement and dissemination of Research results that support high level learning, teaching and
research in the domain of Experimental & Applied Mechanics.
Finally, I express my sincere gratitude and thanks to our Editorial/ Reviewer board and Authors for
their continued support and invaluable contributions and suggestions in the form of authoring write-
ups/ reviewing and providing constructive comments for the advancement of the journals. With
regards to their due continuous support and co-operation, we have been able to publish quality
Research/Reviews findings for our customers base.
I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
Dr. Archana Mehrotra
Director
STM Journals
Director's Desk
STM JOURNALS
1. Finite Element Modeling of Active Twist in Rotor Blades using IDE-PFC Actuators Partha Bhattacharya 1
2. Effect of Fly Ash on the Damping Behaviour of Glass Fiber Reinforced Composite S. K. Tiwari, Ashwani Kumar, Dhananjay Singh 14
3. Hankel Transformation for Chaotic Bionanostructures due to Z+ BIS Intake: Symmetric Fourier Kernel of the Perturbed Organic Biomechanical Systems Tuhin Datta, Madan Mohan Bajaj, Ritu 19
4. Convection in Compressible Couple-Stress Dusty Fluid Pardeep Kumar, Vivek Kumar 27
ContentsJournal of Experimental & Applied Mechanics
JoEAM (2014)© STM Journals 2014. All Rights Reserved
Journal of Experimental & Applied Mechanics ISSN: 2230-9845 (online), ISSN: 2321–516X (print)
Volume 5, Issue 2
www.stmjournals.com
Finite Element Modeling of Active Twist in Rotor Blades
using IDE-PFC Actuators
Partha Bhattacharya*
Department of Civil Engineering, Jadavpur University, Kolkata, W.B., India
Abstract Blade Vortex Interaction in rotating helicopter blades contributes significantly to the
instability and high vibration levels during its operations. It is therefore essential to
evolve a mechanism to reduce unwanted vibration. Several methods/devices, like the smart trailing edge flap actuators, active blade twist, etc are suggested. Active blade twist
concept deals with changing the angle of attack and thereby reducing vibration and
noise. The piezoelectric actuators are the promising devices to achieve the active blade twist. Due to the conformability and positioning aspects, active fiber composite actuators
(piezoelectric fiber composite) with interdigitated electrodes gain an edge over the conventional piezoelectric patch actuators. In the present work, a four noded plate finite
element is formulated to model the rotor blades with IDE-PFC actuators. The element
consists of both mechanical as well as electrical degrees of freedom. The constitutive equations are derived and FE formulation is developed. Results are obtained for static
deflection due to piezoelectric actuation and are validated. Subsequently, parametric studies are carried out on laminated composite rotating blades with IDE-PFC actuation
and the validity of the developed element for d33 actuation is established.
Keywords: Helicopter Blade, IDE-PFC Actuator, Piezoelectricity, Gyroscope
JoEAM (2014)© STM Journals 2014. All Rights Reserved
Journal of Experimental & Applied Mechanics ISSN: 2230-9845 (online), ISSN: 2321–516X (print)
Volume 5, Issue 2
www.stmjournals.com
Effect of Fly Ash on the Damping Behaviour of Glass
Fiber Reinforced Composite
S. K. Tiwari, Ashwani Kumar*, Dhananjay Singh Mechanical Engineering Department, NIT Jalandhar, India
Abstract Composite materials are advanced materials which have wide range of application in
engineering field due to its numerous advantages. High strength to weight ratio is of
utmost demand of major industries such as automobile and aerospace, which a composite material can easily cater. One of the most common methods is reinforcing hard phase
materials into the polymer matrix. This improves the strength but also increases the cost
of the composite. Therefore, inexpensive reinforcements or fillers are identified and used. In this paper the effects of fly ash as filler are investigated to improve the damping
properties of polymer composite on a cantilever beams made up of glass fibers. Fabrication of filler filled composites for different concentration of fillers (5, 10, 15, 20
and 25 wt. %) with the matrix (Lapox C-51 resin) is done by using hand layup process.
This paper presents the experimental study on damping characteristics of free vibration. Results show that the composite with 15% of filler by wt. has the highest damping of
composites.
Keywords: Fly ash, modal analysis, damping, vibration composite
JoEAM (2014)© STM Journals 2014. All Rights Reserved
Journal of Experimental & Applied Mechanics ISSN: 2230-9845 (online), ISSN: 2321-516X (print)
Volume 5, Issue 2
www.stmjournals.com
Hankel Transformation for Chaotic Bionanostructures
due to Z+ BIS Intake: Symmetric Fourier Kernel of the
Perturbed Organic Biomechanical Systems
Tuhin Datta1*, Madan Mohan Bajaj
2, Ritu
3
1Department of Physics, Ramjas College, University of Delhi,
University Enclave, Delhi-100007, India 2Department of Physics & Astrophysics, University of Delhi, Delhi-100007, India
3Department of Mathematics, Dyal Singh College, University of Delhi; Lodi Road, Lodi Colony,
New Delhi-110003, India
Abstract In this universe, we observe several BIS processes, which generate intense and far-
reaching BIS fields in the human body. BIS means breakdown of integrated systems. BIS
load successfully explains several observed phenomena in human traumatology and critically examines the probability of traumatic consequences of individuals having high
BIS load. In this paper, the authors have given a generalization of the Hankel transform
for nanostructures in which the Meijer G-function plays the role of being a symmetrical Fourier kernel. Several properties of self-reciprocal function under this transform
analogous to those given by Hardy and Titchmarsh have been derived therefrom. The
results arrived at have been supported by means of examples. It contributes to our understanding of neurological, cardiac, nephronic, urological disorders due to the
topological changes in the bionanosystem. Constant mechanical processes continue in the human body. The present work is to construct a mechanical model of the chaotic and
highly perturbed nanostructures due to Z+ BIS intake using rigorous mathematical tools.
Mathematical subject classification: 47B35, 47B36, 47B40
Keywords: Meijer G-function, BIS effect, hankel transform, nanostructures,
nanosystems, self-reciprocal function
JoEAM (2014)© STM Journals 2014. All Rights Reserved
Journal of Experimental & Applied Mechanics ISSN: 2230-9845 (online), ISSN: 2321-516X (print)
Volume 5, Issue 2
www.stmjournals.com
Convection in Compressible Couple-Stress Dusty Fluid
Pardeep Kumar1*, Vivek Kumar
2
1Department of Mathematics, ICDEOL, Himachal Pradesh University,
Summer-Hill, Shimla 171005, India 2Department of Mathematics, College of Engineering Studies,
University of Petroleum & Energy Studies, Dehradun-248007 (Uttarakhand), India
Abstract The problem of thermosolutal convection in compressible couple-stress fluid in presence of suspended particles is considered. Following the linearized stability theory and normal
mode analysis, the dispersion relation is obtained. For the case of stationary convection, the compressibility, couple-stress and stable solute gradient postpone the onset of
convection whereas the suspended particles hasten the onset of convection. Graphs have
been plotted by giving numerical values to the parameters to depict the stability characteristics. The case of overstability is also considered wherein the sufficient
conditions for non-existence of overstability are obtained.
Keywords: Thermosolutal convection, compressible couple-stress fluid, suspended
particles
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