x ray microtomography of fibrous structures
NANO- AND MICROELECTROMECHANICAL SYSTEMS Fundamentals of Nano- and Microengineering potx
Ngày tải lên :
29/06/2014, 09:21
... Therefore, we have x A V V 1 ε dv = ε Ax = ε V = C ( x )V x x x v ∫ ∂We ∂ Fex = = x ( C( x )V x )= ∂C ( x ) x V To find the stored energy in the magnetostatic field in terms of field quantities, ... range of hardware and software For example, design of advanced nano- and microscale actuators/sensors and smart structures, synthesis of optimized (balanced) architectures, development of new ... simplest nanosystems (for example, pure actuator) usually cannot function alone For example, at least the internal or external source of energy is needed The complexity of large-scale NEMS and MEMS...
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NANO- AND MICROELECTROMECHANICAL SYSTEMS Fundamentals of Nano- and Microengineering© 2001 docx
Ngày tải lên :
14/03/2014, 14:20
... Therefore, we have x A V V 1 ε dv = ε Ax = ε V = C ( x )V x x x v ∫ ∂We ∂ Fex = = x ( C( x )V x )= ∂C ( x ) x V To find the stored energy in the magnetostatic field in terms of field quantities, ... range of hardware and software For example, design of advanced nano- and microscale actuators/sensors and smart structures, synthesis of optimized (balanced) architectures, development of new ... simplest nanosystems (for example, pure actuator) usually cannot function alone For example, at least the internal or external source of energy is needed The complexity of large-scale NEMS and MEMS...
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Tài liệu Fundamentals Of Power Electronics P1 pdf
Ngày tải lên :
13/12/2013, 01:15
... functions of basic converters Major revision of material on averaged switch modeling New material covering input filter design and Middlebrook's extra element theorem Improved explanations of the proximity ... an expanded explanation of the ZVT full-bridge converter, new material on active-clamp snubbers, and a short treatment of the auxiliary resonant commutated pole The material on ac modeling of ... resonance 8.1.7 The low-Q approximation 8.1.8 Approximate roots of an arbitrary-degree polynomial 8.2 Analysis of converter transfer functions 8.2.1 Example: Transfer functions of the boost converter...
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Tài liệu Fundamentals of Machine Design P1 pdf
Ngày tải lên :
17/12/2013, 11:15
... which in turn is based on experience and experiments For example, when we tighten a nut on a bolt the force exerted or the stresses induced cannot be determined exactly but experience shows that the ... modified design is obtained A new model of a car is a typical example of a developmental design New design This type of design is an entirely new one but based on existing scientific principles No ... system of machines and mechanisms or haulage systems are some of the examples where existing design systems are adapted for a particular use Developmental design Here we start with an existing...
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Tài liệu Fundamentals of Machine Design P4 pdf
Ngày tải lên :
17/12/2013, 11:15
... equilibrium of a 2-D element we take moment of all the forces about point A ( figure-2.1.6.2) and equate to zero as follows: ( τxyδyδz ) x − ( τyx x z ) δy = τyx δy τxy A τxy x τyx 2.1.6.2F- ... ⎢ τzx ⎣ τ xy σy τzy τ xz ⎤ ⎥ τ yz ⎥ σz ⎥ ⎦ Version ME, IIT Kharagpur σy σz τyx τyz τxy τxz x τyz τyx σz x τxz τxy σy 2.1.6.1F- Three dimensional stress field on an infinitesimal element Consider ... x max are the σmax σ d = d max stresses at distances y and d respectively from the neutral axis σmax y dA d σmax For static equilibrium total force at any cross-section F= ∫ d ydA = A The axial...
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Tài liệu Fundamentals of Machine Design P15 pdf
Ngày tải lên :
23/01/2014, 04:20
... At the end of this lesson, the students should have the knowledge of • The function of couplings in machinery • Different types of couplings: rigid and flexible couplings • Types of rigid couplings ... details of such couplings will be discussed in the next lesson The main features of the design are essentially (a) Design of bolts (b) Design of hub (c) Overall design and dimensions 5.1.2.2 Flexible ... The types of misalignments are shown schematically in figure5.1.2.1.1 Aligned shaft axes Shaft axes with lateral misalignment Shaft axes with angular misalignment 5.1.2.1.1.F- Types of misalignments...
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Tài liệu Fundamentals of Machine Design P20 pdf
Ngày tải lên :
23/01/2014, 04:20
... its seat Similar reason holds good for an extension spring, it will experience certain amount of extension and again return to at the most to zero extension state, but it will never go to compression ... prescribed limit Inner diameter of spring, Di = 32 mm 900 − 300 = 40N / mm = 40 × 10 N / m 15 Once the value of stiffness is known, then the value of number of active turns, N of the spring is, Spring ... specimen of desired material Tensile test experiments as we know is relatively simple and less time consuming This experiment is used to obtain yield strength and ultimate strength of any given...
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Tài liệu Fundamentals of Machine Design P23 pdf
Ngày tải lên :
23/01/2014, 05:20
... static stress Q2 What are the limiting values of the angle of twist of a shaft? Version ME , IIT Kharagpur A2 The limiting value of angle of twist of a shaft varies from 0.3 deg/m to deg/m for ... deflection, δ = f (applied load, material property, moment of inertia and given dimension of the beam) From the expression of moment of inertia, and known design parameters, including δ , shaft ... limit of angle of twist should be known The angle of twist is given as follows, θrad = TL GI p or, θdeg = 584TL Gd (1 − k ) ∴ dO = 584ΤL G(1-k )θdeg (8.2.5) Where, θ = angle of twist L = length of...
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Tài liệu Fundamentals of Machine Design P24 pdf
Ngày tải lên :
23/01/2014, 05:20
... stresses of 100 MPa and 300 MPa respectively This gives bearing load on a single rivet Fb = 30 0x1 0 6x0 .0 2x0 .02 = 120 kN Assuming double shear π the shearing load on a single rivet FS = 10 0x1 0 6x2 x (0.02) ... approximately 60 mm The maximum tensile stress developed in the plate section is σt = 1x1 06/[(1-1 7x0 .02 )x0 .02] = 75.76 MPa which is a safe value considering the allowable tensile stress of 385 ... factor of safety should be at least and the minimum ultimate stresses of the plates should be 385 MPa in the tension, 665 MPa in compression and 308 MPa in shear This gives tc ≥ 2x1 06 x0 .5 ,...
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The Fundamentals of Graphic Design- P6 pdf
Ngày tải lên :
01/07/2014, 10:43
... A5 148 x 210 B5 176 x 250 C5 162 x 229 A6 105 x 148 B6 125 x 176 C6 114 x 162 A7 74 x 105 B7 88 x 125 C7 81 x 114 A8 52 x 74 B8 62 x 88 C8 57 x 81 A9 37 x 52 B9 44 x 62 C9 40 x 57 A10 26 x 37 B10 ... 841 x 1189 B0 1000 x 1414 C0 917 x 1297 A1 594 x 841 B1 707 x 1000 C1 648 x 917 A2 420 x 594 B2 500 x 707 C2 458 x 648 A3 297 x 420 B3 353 x 500 C3 324 x 458 A4 210 x 297 B4 250 x 353 C4 229 x ... 432 515 x 728 Crown 381 x 508 ANSI C 432 x 559 364 x 515 Music demy 508 x 394 ANSI D 559 x 864 257 x 364 Demy 445 x 572 ANSI E 864 x 1118 182 x 257 Medium 457 x 584 128 x 182 Royal 508 x 635 Canadian...
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Nano and Microelectromechanical Systems P4
Ngày tải lên :
17/10/2013, 11:15
... bandwidth characteristic of the ADXL150/ ADXL250 The output noise of the ADXL150/ADXL250 scales with the square root of the measurement bandwidth With a single pole roll-off, the equivalent rms ... exact zero g output desired or to allow the maximum output voltage swing from the external amplifier, the zero g offset will need to be externally trimmed using the circuit of Figure 20 The external ... as well Mounting Fixture Resonances A common source of error in acceleration sensing is resonance of the mounting fixture For example, the circuit board that the ADXL150/ADXL250 mounts to may...
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Nano and Microelectromechanical Systems P6
Ngày tải lên :
19/10/2013, 18:15
... (t , x1 , x ) = (x ) + e 10 t x , V (t , x1 , x ) > Then, the total derivative, which is expressed as ∂V ∂V ∂V dV (t , x1 , x ) 3 == + − x1 + x + − e −10 t x1 x − x − x ∂t ∂ x1 x dt ( = − x1 2 ... (x1 , x ) = (x ) + x2 The total derivative is found to be © 2001 by CRC Press LLC dV ( x1 , x ) ∂V = dt x ∂V = − x1 − x1 x x1 ( T dx ∂V = dt x ∂V + − x2 x2 ) ( T F ( x) ... ) > The total derivative is © 2001 by CRC Press LLC ) + x2 ) dV ( x1 , x2 ) & & = x1 x1 + x2 x2 = − x1 2 − x2 (1 + x2 ) dt dV ( x1 , x2 ) Therefore, < Hence, the equilibrium state is uniformly...
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Nano and Microelectromechanical Systems P5
Ngày tải lên :
19/10/2013, 18:15
... + X sL Σ + L' rrrs + X Lms + L' rr X r' r - Lrr + Lms - + + L' rr X X L' rr r' r Lrr + X ubs X Lms X ibs Lms sL Σ + L' rrrs - X X X + X + - i' ar Lms - + + sL Σ + L ssr' r rs Lms Lss + Lss X X ... + L ssr' r rs Lms Lss + Lss X X + X X + Lss X rs Lss - X X + + + Lms X i' br Lms i' ar sL Σ + L ssr' r X ibs ias i' i' ar br + - + X ias ibs - X X i' br X + + X + -PL ms + + TL P - sJ + B m ωr ... M max > u M > u M ω r max f max , ω f max u M1 u MStable Operating max Region ω r max ω f max > ω f > ω f > ω f Voltage − Frequency Control u Mi u = const , Mi = const ω fi fi u M max f max f1...
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Tài liệu Fundamentals of Robotic Mechanical Systems: Theory, Methods, and Algorithms, Second Edition P2 pdf
Ngày tải lên :
19/01/2014, 18:20
... column of the matrix representation of L with respect to the bases BU and BV is composed of the n real coefficients lij of the representation of the image of the jth vector of BU in terms of BV ... characteristic equation of L Example 2.2.1 What is the representation of the reflection R of E into itself, with respect to the x- y plane, in terms of unit vectors parallel to the X, Y, Z axes that form ... Hexapod (Sutherland and Ullner, 1984), the Titan series of quadrupeds (Hirose et al., 1985) and the Odetics series of axially symmetric hexapods (Russell, 1983) A survey of walking machines, of...
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