P P h 2h B a Pre-crack End block Double Cantilever Beam (DCB) test geometry Used to determine mode I failure strength of composite materials δ (J/m 2 )

Slides:



Advertisements
Similar presentations
3/18/2002, Monday Energy Approach to Fracture. Double Cantilever Beam (DCB) If the crack extends by an amount da, the necessary additional surface energy.
Advertisements

Through-the-Thickness Mechanical Properties of Smart Composite Laminates Gang Zhou, L.M. Sim, P.A. Brewster and A.R. Giles Department of Aeronautical.
Fracture Mechanics of Delamination Buckling in Laminated Composites Kenneth Hunziker 4/28/08.
The sandwich effect Lecture 6.
1 Analysis of Test Results 2 What we’ll have to do: Load-Deflection curve. Load Vs Strain curve for steel and concrete Find yield load (  s = 0.002)
Chapter 7 Fracture: Macroscopic Aspects. Goofy Duck Analog for Modes of Crack Loading “Goofy duck” analog for three modes of crack loading. (a) Crack/beak.
ENGR-45_Lec-19_Failure-1.ppt 1 Bruce Mayer, PE Engineering-45: Materials of Engineering Bruce Mayer, PE Licensed Electrical &
1 /18 M.Chrzanowski: Strength of Materials SM2-12: Fracture Introduction to FRACTURE MECHANICS.
EWEC09 Marseille, 18 March 2009 Fracture mechanics techniques for the design of structural components with adhesive joints for wind turbines. Authors:
Test Methods for Fiber Reinforced Polymer (FRP) Composites
An investigation into the face sheet (skins) debonding of glass balsa sandwich composites Comptest Lausanne 02/2011 Dr M. Colin de Verdiere
Chapter 3 – Stress and Deformation Analysis (ref MCHT 213!!)
High Temperature Composites Rutgers University Federal Aviation Administration Advanced Materials Flammability Atlantic City, NJ October 24, 2001.
Modeling Progressive Damage in Composites via Continuum Displacement Discontinuities Vipul Ranatunga Miami University Brett A. Bednarcyk Steven M. Arnold.
Fire Resistive Materials: Adhesion Performance Assessment and Optimization of Fire Resistive Materials NIST July 14, 2005.
Background Info Data References "A Double Cantilever Beam Test for Characterizing Mode I Delamination of Composite Materials." A.
Simulation of Pillar Failure Using FRACOD 2D. Objective n To test the capability of FRACOD 2D in predicting failure of a pillar between two rock excavations.
Model: Shear Bender.
The role of delamination in failure of fibre-reinforced composites by M. R. Wisnom Philosophical Transactions A Volume 370(1965): April 28, 2012.
Mixed-Mode Fatigue Disbond on Metal-to-Metal Interfaces Motivation Adhesive bonding provides a promising alternative to riveted connections, providing.
AAE450 Spring 2009 Lunar Impact Analysis Korey LeMond Structures GL Korey LeMond STRC GL 1.
CE6402 STRENGTH OF MATERIALS
Lecture #19 Failure & Fracture
SHIP STRUCTURES Unique Structures (6.1) What are they optimized for?
A Novel Full-scale Validation of Thermal Degradation of Polymer Foam Cored Sandwich Structures R.K. Fruehmann, J.M. Dulieu-Barton, O.T. Thomsen
I.1 ii.2 iii.3 iv.4 1+1=. i.1 ii.2 iii.3 iv.4 1+1=
Composite Beam Transformed homogeneous beam obtained through a transformation factor: n = E1E2E1E2 dF = σ dA = σ dA’ σ dz dy = σ’ n dz dy σ = n σ’ and.
The Role Of Scaled Tests In Evaluating Models Of Failure Michael R. Wisnom
I.1 ii.2 iii.3 iv.4 1+1=. i.1 ii.2 iii.3 iv.4 1+1=
Bolted joint failure modes
Mixed Mode and Interface Fracture
Sandwich Construction Thin composite skins bonded to thicker, lightweight core. Large increase in second moment of area without weight penalty. Core needs.
LOW TEMPERATURE CRACKING Tim Clyne, MnDOT Dec 7, 2011 MAAPT.
École Polytechnique Fédérale de Lausanne (EPFL),
Topic 3 Load Analysis Topic 1 Applied Elasticity Topic 2 Material Selection PART I. INTRO TO MACHINE COMPONENT DESIGN Rank-Order DataAshby Charts Principal.
Chapter 10: Altstädt, V.: Testing of Composite Materials. In: Grellmann, W., Seidler, S. (Eds.): Polymer Testing. Carl Hanser Verlag, Munich (2013) 2.
Application of Advanced Composites to Helicopter Structures Design for Manufacturing Nothing can replace hands on shop experience as a prerequisite to.
Properties of Composites Dependent on: Constituent phases Reinforcement Matrix Relative amounts Geometry of reinforcement Interface properties Processing.
Toulouse Aeronautical Test Centre (CEAT)
Task 2.2 – Identification of most suitable face-sheets and optimization of panel properties Duration: month 1 to month 12 Partners involved: MOTULAB (WP.
Infra-red Technique for Damage Tolerant Sandwich Structures W.Wang 1 J.M.Dulieu-Barton 1, R.K.Fruehmann 1 and C.Berggreen 2 1 Faculty.
III Semester Staff: Mr. S.Paul Joshua Departmentof Mechanical Engineering.
Project “The development of the didactic potential of Cracow University of Technology in the range of modern construction” is co-financed by the European.
Composite Construction
Testing Methods for Composites
1 MFGT 104 Materials and Quality Compression, Shear, Flexural, Impact Testing Professor Joe Greene CSU, CHICO.
Date of download: 5/28/2016 Copyright © ASME. All rights reserved. From: Hopkinson Bar Loaded Fracture Experimental Technique: A Critical Review of Dynamic.
Dr S R Satish Kumar, IIT Madras1 IS 800:2007 Section 8 Design of members subjected to bending.
John + = + = = = Daniel Bernoulli Leonard Euler The Euler Bernoulli Beam Theory 1750 Eiffel Tower.
Design of Bracing Connections in Concentrically Braced Frames
IS 800:2007 Section 8 Design of members subjected to bending
SANDWICH COMPOSITE BEAMS for STRUCTURAL APPLICATIONS
Chapter 4. Mechanical Testing: Tension Test and Other Basic Tests
Modeling based on the theory of plasticity
Relation Between BM and Slope
Chapter 6: Failure Prediction for Static Loading
Date of download: 12/24/2017 Copyright © ASME. All rights reserved.
D I s , a ·.... l8l8.
Tapered Beams: Engineers often taper beams so that the beam strength is larger where the bending moment is larger.
Università di Roma La Sapienza, Rome Italy
Figure 1: Three Modes of Delamination Growth
Mechanics of Materials Lab
Fracture mechanics Subjects of interest Introduction/ objectives
Chapter 11 Designing Hybrid Materials
CONNECTION Prepared by : Shamilah
I ll I
' 1 A ./.\.l+./.\.l
ME 323 Final Lecture – April 2012
Composite mirror suspensions
Practice Geometry Practice
Presentation transcript:

P P h 2h B a Pre-crack End block Double Cantilever Beam (DCB) test geometry Used to determine mode I failure strength of composite materials δ (J/m 2 ) Beam Theory Method:

End Notch Flexure (ENF) test geometry Used to determine mode II failure strength of composite materials Pre-crack P a B 2h LL (J/m 2 ) Beam Theory Method:

Mixed-mode (I/II) Interlaminar Fracture test geometry Used to determine mixed mode interlaminar failure strength of composite materials Pre-crack δ 2h B L a P (J/m 2 ) Mixed-mode fracture Energy:

Single Cantilever Beam (SCB) test geometry Used to determine skin debonding energy for thick skinned composite sandwich structures Pre-crack Core material B a P Clamp (J/m 2 ) Mixed-mode fracture Energy:

Centre Notch Flexure (CNF) test geometry Used to determine skin debonding energy for thin skinned composite sandwich structures PP (J/m 2 ) Mixed-mode fracture Energy: Pre-crack Hole B a δ

Interlaminar Shear Strength (ILSS) test geometry Standardised three point bend test used to determine interlaminate shear strength for composite structures P δ 20mm 2mm B 10mm (J/m 2 ) Interlaminate Shear Strength: