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| 1 | An experimental study of elastic properties of dragonfly-like flapping wings for use in biomimetic micro air vehicles(BMAVs)显示文摘This article studies the elastic properties of several biomimetic micro air vehicle(BMAV)wings that are based on a dragonfly wing.BMAVs are a new class of unmanned micro-sized air vehicles that mimic the flapping wing motion of flying biological organisms(e.g.,insects,birds,and bats).Three structurally identical wings were fabricated using different materials:acrylonitrile butadiene styrene(ABS),polylactic acid(PLA),and acrylic.Simplified wing frame structures were fabricated from these materials and then a nanocomposite film was adhered to them which mimics the membrane of an actual dragonfly.These wings were then attached to an electromagnetic actuator and passively flapped at frequencies of 10-250 Hz.A three-dimensional high frame rate imaging system was used to capture the flapping motions of these wings at a resolution of 320 pixels x 240 pixels and 35000 frames per second.The maximum bending angle,maximum wing tip deflection,maximum wing tip twist angle,and wing tip twist speed of each wing were measured and compared to each other and the actual dragonfly wing.The results show that the ABS wing has considerable flexibility in the chordwise direction,whereas the PLA and acrylic wings show better conformity to an actual dragonfly wing in the spanwise direction.Past studies have shown that the aerodynamic performance of a BMAV flapping wing is enhanced if its chordwise flexibility is increased and its spanwise flexibility is reduced.Therefore,the ABS wing(fabricated using a 3D printer) shows the most promising results for future applications. | Praveena Nair Sivasankaran Thomas Arthur Ward Erfan Salami Rubentheren Viyapuri Christopher J.Fearday Mohd Rafie Johan | 2017 | Chinese Journal of Aeronautics2017，30，2： | 5 |
| 2 | Studies on the Morphology of Natural Rubber/Polyacrylate Interpenetrating Polymer Networks显示文摘The interpenetrating polymer network(IPN) systems have attracted a lot of attention because of their unique two-phase structure and properties. There have been many publications concerning the IPNs in which poly (isoprene) (PIP) or polyacrylates (PAC) is formed as one of the networks.In the present study, Four serles of natural rubber(NR)/PAC IPNs were prepared and their morphologies were investigated with dynamic mechanics analysis(DMA) and transmission electron microscopy (TEM). | Llao Kalrong (Institute of Polymer Science, Zhangshan University, Guangzhou)Thomas C. Ward (Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA) | 1990 | Chemical Research in Chinese Universities1990，6，1： | 3 |
| 3 | Static strength analysis of dragonfly inspired wings for biomimetic micro aerial vehicles显示文摘This article examines the suitability of fabricating artificial, dragonfly-like, wing frames from materials that are commonly used in unmanned aircraft(balsa wood, black graphite carbon fiber and red prepreg fiberglass). Wing frames made with Type 321 stainless steel are also examined for comparison. The purpose of these wings is for future use in biomimetic micro aerial vehicles(BMAV). BMAV are a new class of unmanned micro-sized aerial vehicles that mimic flying biological organisms(like flying insects). Insects, such as dragonflies, possess corrugated and complex vein structures that are difficult to mimic. Simplified dragonfly-like wing frames were fabricated from these materials and then a nano-composite film was adhered to them, which mimics the membrane of an actual dragonfly. Finite element analysis simulations were also performed and compared to experimental results. The results showed good agreement(less than 10% difference for all cases).Analysis of these results shows that stainless steel is a poor choice for this wing configuration, primarily because of the aggressive oxidation observed. Steel, as well as balsa wood, also lacks flexibility. In comparison, black graphite carbon fiber and red prepreg fiberglass offer some structural advantages, making them more suitable for consideration in future BMAV applications. | Praveena Nair Sivasankaran Thomas Arthur Ward Rubentheren Viyapuri Mohd Rafie Johan | 2016 | Chinese Journal of Aeronautics2016，29，2： | 3 |
| 4 | Phlegmonous gastritis: case report and review显示文摘 | Gordon Y. Kim John Ward Bruce Henessey Joyce Peji Christopher Godell Hiwot Desta Scott Arlin John Tzagournis Fred Thomas | 2005 | Gastrointestinal Endoscopy2005，，1： | 2 |
| 5 | Sphingosine analogue drug FTY720 targets I2PP2A/SET and mediates lung tumour suppression via activation of PP2A‐RIPK1‐dependent necroptosis显示文摘 | Sahar A. Saddoughi Salih Gencer Yuri K. Peterson Katherine E. Ward Archana Mukhopadhyay Joshua Oaks Jacek Bielawski Zdzislaw M. Szulc Raquela J. Thomas Shanmugam P. Selvam Can E. Senkal Elizabeth Garrett‐Mayer Ryan M. De Palma Dzmitry Fedarovich Angen Liu | 2012 | EMBO Mol Med2012，，1： | 2 |
| 6 | The new paradigm of hepatitis C therapy: integration of oral therapies into best practices显示文摘 | N. H. Afdhal S. Zeuzem R. T. Schooley D. L. Thomas J. W. Ward A. H. Litwin H. Razavi L. Castera T. Poynard A. Muir S. H. Mehta L. Dee C. Graham D. R. Church A. H. Talal M. S. Sulkowski I. M. Jacobson | 2013 | J Viral Hepat2013，，11： | 2 |
| 7 | Effect of Overburden Pressure and Water Saturation on Gas Permeability of Tight Sandstone Cores 显示文摘 | Thomas Ward | 1972 | SPE3634 - PA1972，，： | 1 |
| 8 | Electrostatic adhesion of rigid-planar electrodes 显示文摘 | Thomas Ward | 2007 | Journal of Electrostatics2007，65，12： | 1 |
| 9 | Effect of over-burden pressure andwater saturation on gas permeability of the tight sandstonecores显示文摘 | Thomas R D Ward D C | 1972 | Journal of Petroleum Technology1972，24，2： | 1 |
| 10 | Age and Gender Differences in Self Directed Learning Read-iness: A Developmental Perspec- tive显示文摘 | Thomas G R Ward D | 2005 | International Journal of Self Directed Learning2005，2，1： | 1 |
| 11 | Age and gender differences in self- directed learning readiness: adevelopmental perspective 显示文摘 | Thomas GR Ward D | 2013 | International Journal of Self- Directed Learning2013，8，3： | 1 |
| 12 | The Crystal Structure of a Truncated ErbB2 Ectodomain Reveals an Active Conformation, Poised to Interact with Other ErbB Receptors显示文摘 | Thomas P.J. Garrett Neil M. McKern Meizhen Lou Thomas C. Elleman Timothy E. Adams George O. Lovrecz Michael Kofler Robert N. Jorissen Edouard C. Nice Antony W. Burgess Colin W. Ward | 2003 | Molecular Cell2003，，2： | 1 |
| 13 | Treatment of late-onset asthma with fluconazole显示文摘 | George W. Ward Judith A. Woodfolk Mary L. Hayden Sandra Jackson Thomas A.E. Platts-Mills | 1999 | The Journal of Allergy and Clinical Immunology1999，，3： | 1 |
| 14 | Age and gender differences in self-directed learning readiness : adevelopmental perspective 显示文摘 | Thomas GR Ward D | 2005 | International Jour- nal of Self Directed Learning2005，2，1： | 1 |
| 15 | Structure-property relationships for a series of amorphous partially aliphatic polyimides显示文摘 | Amy E Eichstadt Thomas C Ward Melanie D Bagwell | 2002 | Journal of Polymer Science Part B:Polymer Physics2002，40，： | 1 |
| 16 | Regulatory Effects of iNOS on Acute Lung Inflammatory Responses in Mice显示文摘 | Cecilia L. Speyer Thomas A. Neff Roscoe L. Warner Ren-Feng Guo J. Vidya Sarma Niels C. Riedemann Megan E. Murphy Hedwig S. Murphy Peter A. Ward | 2003 | The American Journal of Pathology2003，，： | 1 |
| 17 | Team performance: The case of english premiership football 显示文摘 | FIONA CARMICHAEL DENNIS THOMAS ROBERT WARD | 2000 | Manag Decision Eco2000，21，1： | 1 |
| 18 | Effect of overburden pressure and water on gas permeability of tight sandstone cores显示文摘 | Thomas R D Ward D C | 1972 | JPT1972，24，2： | 1 |
| 19 | IL-17 in psoriasis: Implications for therapy and cardiovascular co-morbidities显示文摘 | Jackelyn B. Golden Thomas S. McCormick Nicole L. Ward | 2013 | Cytokine2013，，： | 1 |
| 20 | Alteration to the extra- to intra- cellular fluid balance measured by multiple frequency bioelectrical impedance analysis 显示文摘 | Cornish BH Ward LC Thomas BJ | 1994 | Nutr Res1994，14，： | 1 |
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