architectural lighting design and applications

... Shaw designed and built the weatherproof pseudolite housings and theirmounts Todd Walter and Changdon Kee offered design ideas and advice Jock Christie,Mike O’Connor, Jennifer Evans, Y C Chao, and ... pseudolites and synchrolites was designed andtested The goal of this system, known as the Integrity Beacon Landing System (IBLS),was to provide navigation accurate and reliable enough to land aircraft ... algorithm and analyzed the data As ateam, we shared successes and setbacks, design and redesign, long discussions, long journeys,and long hours In the end, teamwork triumphed over all the obstacles

Ngày tải lên: 27/04/2014, 23:47

... 6 JOINING AND ASSEMBLY We have seen previously how to design a laminate to support loads. A second fundamental aspect of the design of a composite piece consists of the design for the ... problems involving riveting, bolting, and bonding: Ⅲ of a composite part to another composite part and Ⅲ of a composite part to a metallic part. 6.1 RIVETING AND BOLTING Ⅲ In all mechanical ... expressions in which E c is the modulus of the adhesive, and E 1 and E 2 are the moduli along the horizontal direction of the bonded parts 1 and 2. One can also write: Ⅲ Maximum shear stresses are

Ngày tải lên: 10/08/2014, 11:21

... there are as many and nthply nthply Trang 24with the x axis an angle -q.5 In effect, the coefficients 13 and 23 are and, therefore, cancel each other out for the pairs of and the stress–strain ... (matrix andfiber), with simple geometry and loading conditions, in order to estimate theelastic properties of the equivalent material, i.e., of the composite 10.1 LONGITUDINAL MODULUS E
f stands ... expressionsfor the stiffness coefficients , where c = cosq and s = sinq (11.8) sented in Figure 11.2 for a ply characterized by moduli E
and E t with very different 11.3 CASE OF THERMOMECHANICAL

Ngày tải lên: 10/08/2014, 11:21

... be inverted, and one obtains Equation 12.9 as: We have already determined the apparent moduli and the coupling coefficients of the laminate Nonrupture of the laminate: Let s
, st, and t
t be the ... Integrals of this type disappear and there remains which can be written as: +Ó Ì Ï – k=1 st ply Trang 9Proceeding in an analogous manner with M x and M xy (Equations 12.14 and12.15), one obtains the ... in a Laminate Trang 11 -can be inverted, and noting:one obtains: The identification of the behavior noted in Figure 12.8(a), on the one hand, the other hand, that is: leads to an approximate equation

Ngày tải lên: 10/08/2014, 11:21

... that c = cos q and s = sin q . Thus, Replacing in the expression of the Hill–Tsai criterion of Equation 14.6, we have then: Remarks: Ⅲ If s x is in tension, then s ᐉ rupture and s t rupture ... rupture Remarks: Here, taking into account Figure 14.4 (txy > 0) and Equations 14.7, s rupture will be the limit stress in compression, and st rupture the limit stress in tension for 0 Ê q Ê 90 ... equilibrium and behavior relations are formally identical to those that characterize the behavior of classical homogeneous beams Utilization of these relations for the calculation of stresses and

Ngày tải lên: 10/08/2014, 11:21

... substitute to g(z) and p(z) the functions g0(z) and p0(z) such that: g0(z) and p0(z) are called the warping functions Then the boundary conditions and the interface conditions simplify, and Equations ... coefficients k x and k y which require theknowledge of the functions g(z) and p(z) for their calculations. 17.6.4 Warping Functions
Boundary conditions: We have assumed that the upper and lower faces ... following thesimplified forms of Equations 17.21, 17.22, and 17.23 because they well show thedirect connection between the warpings hx and hy and the transverse shear forces Such a limiting case

Ngày tải lên: 10/08/2014, 11:21

... thedesigner and the optimal composition This difference in composition leads to arelative difference in thickness: which indicates a moderate sensibility concerning the effect of thickness and,thus, ... has Equations [2] and [3] lead to and taking into account that ¥+ = Trang 1318.1.8 Tube Made of Glass/Epoxy under Pressure1 Calculate the stresses (sx, sy ) along the axes x and y in the tangent ... the modulus of the coated fiber that one wishes to determine, and s = p (d/2 + e)2 The load F is divided into FC on the carbon fiber and FN on the nickel coating. The equality of the elongations

Ngày tải lên: 10/08/2014, 11:21

... [...]... (aEh)y, and h (aEh)xy from the Equation 12.18 This calculation requires knowledge of the terms a E 1 , a E 2 , and a E 3 of each ply (Equations 12.17 and 11.10 and numerical values ... Tables 1.3 and 1.4 of Section 1.6) For that, one has to know the coefficients of expansion aᐉ and at of a ply in its principal axes (ᐉ,t) It can be written (Equations 10.7 and 10.8 and numerical ... numerical values in Tables 1.3 and 1.4... in its principal axes (ᐉ,t); one has (Equation 10.2 and those that follow and numerical values in Tables 1.3 and 1.4 in Section 1.6.) Eᐉ = 74,000

Ngày tải lên: 10/08/2014, 11:21

... plies noted as 2 and 1, each with a thickness e, crossed at 0∞ (or x) and at 90∞, respectively. We give below the respective thermomechanical behavior of these layers in axes x and y, which are ... elastic The longitudinal and shear moduli of the two materials are denoted as E1, G1 and E2, G2 The elements... f ) e2 3.9 With the results of the second part, and DT = 160 C (corresponding ... gure for different ratios of E1/E2 and H2/H1, for the particular case of identical Poisson coefcients 18.3.4 Buckling of a Sandwich Beam Problem Statement: A sandwich beam is compressed at its

Ngày tải lên: 10/08/2014, 11:21

... Calculate the equivalent moduli and ,the equivalent coefficients and of the reinforcement glass/polyester Trang 5in the axes x,y:s1x and s1y in the internal layer of PVDF s2x and s2y in the external ... Sandwich Beam 49 Problem Statement: Consider a sandwich beam of length
and width d simply supported at its ends (see figure) It consists of two identical skins of material 1 (glass/resin) and ... obtains and with [2] and [3], by substitution, one obtains a system that allows the calculation Trang 9Following the results [1], one findsThe system [6] has for solutions: Relations [4] and [5]

Ngày tải lên: 10/08/2014, 11:21

... Materials and Structures, ASME-AMD, Vol 82, 1989 © 2003 by CRC Press LLC TX846_Frame_Appendix Page 527 Thursday, July 11, 2002 5:42 PM Ⅲ Elastic Analysis and Engineering Design formulae ... shear in orthotropic panels and tubes. Rectangular Panels The following plates allow one to calculate the critical stress resultants 1 in compression and in shear for different support ... ... PM BIBLIOGRAPHY Ⅲ Les matériaux composites, J Weiss, C Bord, Vol 1 and 2, Publications of the Ministry of Industry and Research of Centre d’Études Techniques des Industries Mécanique Ⅲ

Ngày tải lên: 10/08/2014, 11:21

... data transmission and reception technique for applications including automatic identification, asset tracking and security surveillance As barcodes and other means of identification and asset tracking ... focuses on new and advanced applications of radio frequency identification The second section starts with one of the most common applications of RFID – privacy and product maintenance and tracking ... familiar with RFID and wish to gain information on novel designs and cutting edge RFID technology This book also provides substantial theoretical and technological background and explanation of...

Ngày tải lên: 19/06/2014, 23:20

... wrap and Teflon sheet between the tag and the aluminum plate The Teflon sheet is hard and its thickness at 0.97mm is very close to the 1mm 26 Advanced Radio Frequency Identification Design and Applications ... Identification Design and Applications including receiver implementation details, receiver gain, communication protocol specifics and interference generated both within the reader and externally ... the chip and the tag antenna is very + − − + short (its length is nearly zero), hence, V0 = V2 and V0 = V2 Then Equation 43 becomes 20 Advanced Radio Frequency Identification Design and Applications...

Ngày tải lên: 19/06/2014, 23:20

... inefficient, and its radiation resistance decreases The challenge is to design small and efficient antennas that have a fractal shape l (a) Initiator (b) Generator Fig Initiator and generator of the standard ... antenna (P3) (Salama and Quboa, 2008a) 36 Advanced Radio Frequency Identification Design and Applications Table summarizes the simulated results of P3 as well as those of the standard Koch fractal ... (S3-45°) 40 Advanced Radio Frequency Identification Design and Applications The simulated radiation pattern with 2D and 3D views at φ=0 and 90° are shown in Fig 16 for the modified Sierpinski...

Ngày tải lên: 19/06/2014, 23:20

... Frequency Identification Design and Applications Salama A M A., (2010) Antennas of RFID Tags, Radio Frequency Identification Fundamentals and Applications Design Methods and Solutions, Cristina ... intersystem and intra-system interference, as 52 Advanced Radio Frequency Identification Design and Applications it operates in the ISM bands (Industrial Scientific and Medical), free bands Many ... Advanced Radio Frequency Identification Design and Applications K Finkenzeller, RFID Handbook: Fundamentals and Applications in Contactless Smart Cards and Identification, 2nd edition, New York,...

Ngày tải lên: 19/06/2014, 23:20

... parameters (N, D, and H) is explained by taking into account Eq (3.6) The relation between XL and H is determined on the basis of 84 Advanced Radio Frequency Identification Design and Applications ... frequency dependence, we divide the numerator and denominator of Eq (3.15) by λ2 and obtain 88 Advanced Radio Frequency Identification Design and Applications 600π D 19.7 N ( )2 D λ λ + 20 H = ... polarization applications which represents one of the availabilty and usefulness in contrast to the conventional meander-line and meander-slot tags Fig 11 Radiation patterns for 900 MHz Fig 12 AR...

Ngày tải lên: 19/06/2014, 23:20

... the NMHA, and the tap width and tap length are denoted as a and b, respectively The equivalent electric circuit is shown in Fig 4.3 Here, L, C, and R are the inductance, capacitance, and input ... 4.7(a) and 0.37 The solid and dotted lines agree well, confirming the proportional relationship between MA/L0 and N/HA value We thus have Design of a Very Small Antenna for Metal-Proximity Applications ... thickness is T, and the size of the metal plate is M The spacing between the antenna and the metal plate is S The equivalent electric and magnetic currents are I and J, respectively Eθ and Eφ correspond...

Ngày tải lên: 19/06/2014, 23:20

... W L Stutzman and G A Thiele, “Antenna Theory and Design, second edition”, John Wiley & Sons, Inc., pp 43-47 and p.71, 1998 [11] W L Stutzman and G A Thiele, “Antenna Theory and Design, second ... Whinnery and Theodore Van Duzer, FIELDS AND WAVES IN COMMUNICATION ELECTRONICS – Third Edition, JOHN WILEY&SONS, INC., pp.189-193, 1993 [18] W L Stutzman and G A Thiele, “Antenna Theory and Design, ... collects power 116 Advanced Radio Frequency Identification Design and Applications and timing information from the electromagnetic field and sends proper backscattered messages to the reader using...

Ngày tải lên: 19/06/2014, 23:20

... Kaklamani, A A Alexandridis, F Lazarakis, K Dangakis (2006), “Circular and elliptical CPW-Fed slot and microstri-fed antennas for ultrawideband applications , IEEE Antennas and Wireless Propagation ... fully-printable single-layered design in a compact and low cost format It has significant amount of data encoding capability (up to 23 bits were designed) Prior to the design and development of the chipless ... resonances when performing amplitude and phase data decoding Given the potential high demand on RFID technology in terms of reading range and applications some open issues and further areas of interest...

Ngày tải lên: 19/06/2014, 23:20

... k = M( seed T ∗ ), x = P ( k) and seed Ti = M( k) x ← −−−− − send x else choose random number rand calculate s = M( seed Ti ) and m = P ( s ) rand ← −−−− − send rand with probability λ if m = ... real-life applications such as asset management, supply chain, and product maintenance, etc Especially, RFID tag search system 174 Advanced Radio Frequency Identification Design and Applications ... the IDs of readers And Protocol and Protocol not provide forward secrecy for such a reason as mentioned in section 4.1 184 Advanced Radio Frequency Identification Design and Applications Tag T...

Ngày tải lên: 19/06/2014, 23:20