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45 th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference April 19-22, 2004 Structures TC Session Status Fall TC Meeting Report Steve Engelstad Lockheed Martin Aeronautics Company Marietta, GA. Summary. Conference Overview Structures Review Statistics

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45th AIAA/ASME/ASCE/AHS/ASC

Structures, Structural Dynamics and Materials Conference

April 19-22, 2004

Structures TC Session Status

Fall TC Meeting Report

Steve Engelstad

Lockheed Martin Aeronautics Company

Marietta, GA


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Summary

  • Conference Overview

  • Structures Review Statistics

  • Special Sessions

  • Technical Sessions




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Conference Overview

  • Theme

    • Structures, Structural Dynamics, and Materials – From Conception to Application

  • Speakers

    • Industry, Government, Academia, International?


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Conference Overview

  • 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

  • 12th AIAA/ASME/AHS Adaptive Structures Conference (Greg Agnes and Lee Peterson )

  • There will be two Forums

    • Non-Deterministic Approaches (Chris Chamis & Levon Minnetyan)

    • Gossamer Spacecraft (Eric Flint & Rich Pappa)

  • TC’s are responsible for:

    • Review of all papers in their area

    • Preliminary Layout of Sessions

    • List of names/address/email/phone for Session Chairs & Co-Chairs

    • Prioritization of each Session (give each session a different priority number)

    • Indicate Plenary Sessions and Student Papers


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Abstract Review Procedures & Dates(Includes SDM, ASC, DSM and Forums)

  • Abstract reviews will be handled electronically like last year

  • Abstracts – published due date is 1 Aug 03

  • All abstracts get three independent reviews

  • Invited vs. encouraged papers – what’s the difference?

    • The only truly invited papers are the Keynote addresses and the SDM Lecture

    • All other papers will go through the standard review process

  • Swapping abstracts with other TC’s or Forums as appropriate is encouraged (inform the Technical Chair!)





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Latest Planning Schedule

  • September 12: Abstract reviews completed

  • September 26: Session planning completed!!! (SDM Planning Meeting in Palm Springs on this day)

  • October 10: Session chairs & co-chairs assigned

  • October 24: Program completed!!!



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Structures Area Abstracts – SDM 45

  • Abstracts Processed

    • 150 Total Structures Abstracts Submitted

    • 0 Accepted (too early to accept/reject)

    • 0 Rejected (too early to accept/reject)

    • 34 Returned for Revision

    • 449 Reviews Assigned

    • 162 Completed Reviews

    • 37% Total Reviews Completed

  • 6 Student Abstracts Placed In Structures Sessions

  • 5 Special Sessions in Structures Program


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Review Process

  • Review Team

    • 36 TC Member Reviewers – Average 5 abstracts (will increase)

    • 33 Friends of TC Reviewers – Average 5 abstracts

    • 33 Volunteer Reviewers – Average 3 abstracts

  • 1st Abstract Deadline 8/1/03 - around 90 abstracts submitted

  • 2nd Abstract Deadline 8/15/03 – Shot up to 150 abstracts

  • Conducted initial screening and sent 34 abstracts back for revision

    • 19 were revised

    • 15 were not revised; (will be rejected)

    • If reject 5 more, would give an acceptance rate of 87%

  • 430 Now under review

  • We are short on reviewers, as I expect some reviewers not to perform; expect to assign these to other reviewers



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Special Session on Aircraft Structures Certification

  • Organized and Chaired by Steve Engelstad and Ben Thacker

  • 5 papers followed by a panel discussion

  • A Hybrid Probabilistic Method for Composite Aircraft Design

  • Evolution of Structures Design Philosophy and Criteria

  • Probabilistic Damage Tolerance Methodology for Reliability Design and Inspection Optimization

  • A Functional Methodology for Assessing Post-Initation Damage in Composite Structures and Bonded Joints

  • An Alternate Certification Approach for Composite Structures


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Special Session on Structural Health Management

  • Organized and Chaired by Aditi Chattopadhyay and Michael Enright

  • Damage detection capabilities based on new signal processing approach

  • A Probabilistic Damage-Based Approach to Structural Health Management

  • Monitoring Preload in a Composite-to-Metal Bolted Joint with Fiber Optics

  • Finite Element Modeling for Piezoelectric Smart Composites Including Debonding

  • An Integrated Active Sensing System for Damage Identification and Prognosis

  • Optimal Sensor Placement for Damage Characterization Using Genetic Algorithms

  • Bio-Inspired Embedded Sensory Architecture for Structural Health Monitoring


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Special Session on High Energy Impact Considerations

  • Organized and Chaired by Anthony N. Palazotto

  • High Velocity Impacts of Man Portable Air Defense Systems (MANPADS) on Selected Targets

  • Testing Composite Joints Under High Energy Hydrodynamic Ram Conditions

  • A Gradient-Dependent Constitutive Model to Simulate Impact Damage Problem

  • Phase Transitions and Dislocation-Based Plasticity at High-Strain-Rates in Solids

  • Fragment Cloud Impact Response of Woven Carbon Epoxy Composite Plates

  • Numerical Analysis for a Study of the Mitigation of Hypervelocity Gouging

  • Finite Element Simulation of Soft Projectile Impacting Braided Composite Structures


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Special Session on Concepts for Morphing and Reconfigurable Structures

  • Organized and Chaired by Sergio Pellegrino

  • Continuous Moldline Technology Flight Demonstration Program

  • Actuation of kagome lattice structures

  • Bi-stable Concepts for Reconfigurable Structures

  • An Asymmetrically-Bistable Monolithic Energy Storing Structure

  • A novel actuated composite tape-spring

  • Multi-Configuration Space Frames


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Special Session on Cryogenic Propellant Tanks and Integrated Structures for aNext Generation Reusable Launch Vehicle

  • Organized and Chaired by Ted Johnson

  • Composite Development and Applications for RLV Tankage

  • Measuring Thermal Conductivity at LH2 Temperatures

  • Shortened Qualification Testing Time for Propellant Tanks Of a Reusable Launch Vehicle

  • Thermal–Structural Optimization of Integrated Cryogenic Propellant Tank Concepts for a Reusable Launch Vehicle

  • Trade Study Results for a Reusable Launch Vehicle Composite Hydrogen Tank

  • Prediction of Micro-crack Densities in Cryogenic IM7/977-2 Propellant Tanks

  • Thermal-Mechanical Failure Analysis of Composite Cryogenic Materials Using Multi-Continuum Theory

  • Reliability and Sizing of Propellant Tanks Of a Reusable Launch Vehicle

  • Analysis of TPS Sandwich Panel with Foam Core

  • Polyimide Foam Development and Characterization for Lightweight Integrated Structures


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Technical Sessions Structures for a


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Technical Session Roster -- Structures Structures for a

Monday April 19 (6 session max; 7 last year)

  • Beams, Plates and Shells I (7)

  • Structural Applications I (5)

  • Structural Mechanics I (7)

  • Design Tradeoffs and Optimization (5)

  • High Energy Impact Considerations (7)**

  • Aircraft Structures Certification (5 and panel) **

Tuesday April 20 (7 session max; 6 last year)

  • High Fidelity Analysis for Failure Initiation and Damage (7)

  • Computational Structural Mechanics I (6)

  • Morphing and Reconfigurable Structures (6)**

  • Structural Health Management (7)**

  • Structural Stability and Postbuckling Behavior (5)

** Denotes Special Session or Panel Session

(#) = Number of Abstracts in Topic


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Technical Session Roster – Structures (Continued) Structures for a

Tuesday April 20 Continued (7 session max; 6 last year)

  • Damage Detection and Evaluation I (7)

  • Cryogenic Fuel Tank Structures I** (5)

Wednesday April 21 (6 session max; 4 last year)

  • High Fidelity Analysis for Stability Critical Structures (6)

  • Structural Integrity (7)

  • Propulsion and Rotorcraft Structures (7)

  • Damage Detection and Evaluation II (6)

  • Cryogenic Fuel Tank Structures II** (5)

  • Structural Applications II (7)

** Denotes Special Session or Panel Session

(#) = Number of Abstracts in Topic


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Technical Session Roster – Structures (Continued) Structures for a

Thursday April 22 (3 session max; 6 last year)

  • Beams, Plates and Shells II (6)

  • Computational Structural Mechanics II (5)

  • Structural Mechanics II (7)

** Denotes Special Session or Panel Session

(#) = Number of Abstracts in Topic


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End of Presentation Structures for a


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Alternate Abstract Review Process Structures for a

Based on Materials TC Approach

  • Distribute Submitted Abstracts to Small TC Review Team

    • Assess Technical Credibility

    • Identify Clearly Deficient Abstracts

    • Return Deficient Abstracts for Revision With Due Date

  • Accept Abstracts That Pass Initial Review

  • Reject Deficient Abstracts If Not Revised

  • Reject Deficient Abstracts Not Revised Satisfactorily

NOTE

  • This Approach Is Fair

    • Allows for Revisions to Occur

    • Ensures That Authors Who Make An Honest Effort Get Chance to Present

  • This Approach Is More Consistent With the High Acceptance Rates for Abstracts


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