Polyme Analysis 2010 Part 9 ppsx

... Mode Sample Stationary Clamp Movable clamp DMA : Shear Sandwich Mode Movable Clamp Stationary Clamp Sample DMA 298 0 : Schematic UNIQUE PATENT-PENDING DESIGN SAMPLE BIFILAR-WOUND FURNACE CLAMPS AIR BEARING SLIDE AIR BEARING OPTICAL ENCODER DRIVE

Ngày tải lên: 12/08/2014, 02:20

... B10Failure patterns and analysis B10.3 Weibull analysis Weibull analysis is a more precise technique. Its power is such that it can provide ... that they were caused in part by assembly errors, in part of machine surges. Figure 10.7 Plain thrust bearing failures on centrifugal air compressors B8Component performance analysis B8.1 A useful ... roller bearings. Determination of the...

Ngày tải lên: 11/08/2014, 10:22

... DESIGN EXAMPLES M 1 =1.13 − 0. 09  .07 2.  =1.127 M 2 =0. 89  0.2+  .07 2.  −1 − 0.54 =3.247 M 3 =0.5 −  0.65 +  .07 2  −1 +14  1. −  .07 2  24 =4 .99 4 Substituting K =36.3 √ π.07  1.127 ... a i (13.28) where OA i A i+1 =(OA i B i )+(A i B i B i+1 A i+1 ) − (OA i+1 B i+1 ) (13. 29- a) = 1 2 P i u i + 1 2 (P i + P i+1 )(u i+1 − u i ) − 1 2 P i+1 u i+1 (13. 29- b) = 1 2 (P i u...

Ngày tải lên: 11/08/2014, 15:21

... 0.734 0.732 Octane No. 97 97 Reid vapour pressure, kN/m 2 13.5 7.7 Initial boiling point, °C34 30 10% fraction boils off at, °C55 51 25% 74.4 63.5 50% 104.8 92 .8 75% 1 39. 2 1 29. 4 Final boiling point ... – 15W 3500 at – 15 5.6 – 20W 4500 at – 10 5.6 – 25W 6000 at – 5 9. 3 – 20 – 5.6 9. 3 30 – 9. 3 12.5 40 – 16.3 16.3 50 – 16.3 21 .9 60 – 21 .9 26.0 Fig. 18.2. At 100°C, the two ref...

Ngày tải lên: 11/08/2014, 20:21

... composition of polymers etc. and complex morphological systems ⇒ analysis of polymer ≠ the small organic materials ⇒ Focus on viscoelasticproperties, dynamic mechanical testing. Polymer analysis üThe ... advantageous, particularly in the case of tests running for a long time (creep tests) Tests for Producing Design Data TRƯỜNG ĐẠI HỌC BÁCH KHOA ĐÀNẴNG KHOA HOÁ PHÂN TÍCH POLYME (POL...

Ngày tải lên: 12/08/2014, 01:22

... (e) (f) Compression test (b) Shear (g) (h) (i) Impact test (h) (i) What are our expectations of polymer materials? •Excellent Characteristics: Mechanical and Physical Properties Thermal Behaviour Surface ... cost •Less adverse environmental impact •Good resistance to environmental attacks Mechanical Testing of Polymers For the composite samples Longitudinal test Transverse test

Ngày tải lên: 12/08/2014, 02:20

... Deformation of Semicrystallineand crosslinkedPolymers Deformation of Amorphous Polymers TENSILE RESPONSE: ELASTOMER CASE üModuliof elasticity for polymers are ~ 10MPa-4GPa (compare to metals ... hundreds of MPato several GPa) üElongation can be up to 1000 % in some cases (< 100% for metals) üPolymers are also very sensitive to the rate of deformation (strain rate). Decreasing rate of d...

Ngày tải lên: 12/08/2014, 02:20

... shapes can be used üThe most commonly used specimen size: + 3.2mm x 12.7mm x 125mm for ASTM D 790 +10mm x 4mm x 80mm for ISO 178 Test Procedure: Flexural test

Ngày tải lên: 12/08/2014, 02:20

... used) in water. W = mass of totally immersed sinker if used and partially immersed wire. +Density, kg/m3= (specific gravity) x (99 7.6) Test procedures: ü Density is the mass per unit volume of ... lower density or specific gravity means more material per pound or varied part weight. Density and Specific Gravity ASTM D 792 , ISO 1183 Scope: üThe specimen is placed between compressive plate...

Ngày tải lên: 12/08/2014, 02:20

... amorphous polymer or an amorphous part of a crystalline polymer goes from a hard, brittle state to a soft, rubbery state. Tm = melting point = The temperature (°C) at which a crystalline polymer ... determine the temperature of the transitions Test procedures: Differential thermal analysis (DTA) Thermal Analysis üThermal analysis (TA) is frequently used to describe analytical experi...

Ngày tải lên: 12/08/2014, 02:20