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The Advanced Composites Repair Analysis Tool (ACRAT) has been under development for the USAF Advanced Composites Program Office under an Ogden ALC Design Engineering Program (DEP) Contractual Engineering Task (CET) Order. ...The objective has been to develop Beta versions of this computer aided composite repair design and assessment engineering tool following the provisions and procedures of the ASTM Standard E 1340-90 (Reference 1). ...Four (4) customized database schemas (M&P, Aircraft Design, Composite Repair, Component Test) were designed and sufficiently populated to evaluate each data model's ability to meet specific ACRAT system requirements.

This document describes a standard method to collect and report dielectric data for the purpose of monitoring or studying the cure of composites.

In this paper, we describe our accomplishments in infiltrating a carbon/carbon composite material with polycrystalline diamond. This development results in an ultra high thermal conductivity electronics baseplate featuring an electrically insulating coating with high thermal conductivity. ...This novel composite material exhibits thermal conductivity higher than all existing coldplate materials. We have prepared diamond-infiltrated composites, and characterized the resulting material including the thermal conductivity measurement of the base carbon/carbon, SEM and Raman spectroscopy, and DC electrical resistivity measurements of the integrated diamond/carbon/carbon composites. ...We have prepared diamond-infiltrated composites, and characterized the resulting material including the thermal conductivity measurement of the base carbon/carbon, SEM and Raman spectroscopy, and DC electrical resistivity measurements of the integrated diamond/carbon/carbon composites.

Some of the topics covered are composites, including thermosets, thermoplastics and nanocomposites; fiber reinforcement of composites; and specialized applications. ...For each type of composite, the chemistry, cure methods, fabrication methods, mechanical properties, thermal properties and environmental degradation are considered.

The paper is divided into four sections: purpose of testing; basic requirements for application, such as equipment, reference standards, and acceptance criteria; standard applications, such as wrought metal products, tubing and pipe welded assemblies, thickness and corrosion, fiber-reinforced composites, adhesive-bonded assemblies, brazed and diffusion-bonded assemblies, aircraft maintenance inspection, attenuation, and grain-boundary reflections; and research and development applications, such as the liquid-level detector, titanium hydride detector, measurement of applied stress, ultrasonic extensiometer, ultrasonic modulus versus mechanical properties for fiber composites, ultrasonic spectroscopy, acoustic holography, and critical angle reflectivity. ...The paper is divided into four sections: purpose of testing; basic requirements for application, such as equipment, reference standards, and acceptance criteria; standard applications, such as wrought metal products, tubing and pipe welded assemblies, thickness and corrosion, fiber-reinforced composites, adhesive-bonded assemblies, brazed and diffusion-bonded assemblies, aircraft maintenance inspection, attenuation, and grain-boundary reflections; and research and development applications, such as the liquid-level detector, titanium hydride detector, measurement of applied stress, ultrasonic extensiometer, ultrasonic modulus versus mechanical properties for fiber composites, ultrasonic spectroscopy, acoustic holography, and critical angle reflectivity.

Digital Design Tools Simulating Thermal Expansion in Composites with Expanded Metal Foil for Lightning Protection Rugged Computing Designing VME Power Systems with Standard Modules Optical Sensors Optical Ice Sensors for UAVs Rotorcraft Technology Rotorcraft Icing Computational Tool Development RF & Microwave Technology Curled RF MEMS Switches for On-Chip Design: Design Software Supports BAE System's Mixed-Signal Chip Design

Therefore, they can potentially absorb more impact loads and deliver higher resilience and flexibility in composites. One of the main issues for using these nanomaterials in composites is the uniform dispersion of these nanoparticles in the matrix system, besides their poor interface properties. ...As an example, Carbon Nanotubes (CNTs) have been extensively used for the improvement of mechanical, thermal, electrical, magnetic, and deteriorative properties of traditional composite materials for applications in high-performance structures. The exceptional materials properties of CNTs (i.e., mechanical, magnetic, thermal, and electrical) have introduced them as promising candidates for reinforcement of traditional composites. ...., mechanical, magnetic, thermal, and electrical) have introduced them as promising candidates for reinforcement of traditional composites. Most structural configurations of CNTs provide superior material properties; however, their geometrical shapes can deliver different features and characteristics.

Use of new alloys, 2. greater use of “near-net-shape” parts, 3. employment of low cost alloys modified by ion implantation or by laser glazing, and 4. greater use of fiber reinforced plastics, thermoformable plastics, reinforced stampable plastics and fiber reinforced metal matrix composites.

This paper develops a robot automatic drilling system for processing the titanium alloy, aluminum alloy and laminated composites component of aircraft. The accurate robot drilling system is comprised of ABB IRB6640-235 robot, drilling end-effector, end-effctor control system and vision system.

The two technologies identified as a prime paths to achieve these goals are composite materials and fiber optics - the composites will provide improved ballistic survivability, increased thermal resistance and reduced component weight; the fiber optics will provide lighter system weight and improved EMI/EMP resistance.

In this paper we introduce an ionic polymer metal composite (IPMC) we have recently developed that can operate well above the standard 125°C. These capacitors have the potential to meet all other typical aerospace and automotive design constraints of high reliability, robustness, and light weight as well as having additional features of being flexible, scalable, and customizable in shape. ...Our recent discovery of the capacitive behavior in specially treated perfluorinated sulfonic acid polymers sandwiched between metal electrodes has lead to the exciting development of high temperature capable high-density passive storage components. These composites exhibit capacitance per unit planar area of ~1.0 mF cm-₂ or 40 mF/g for a ~100 μm thick polymer substrate, with only a minor decrease in capacitance observed after heating above 125°C followed by constant capacitance up to 300°C.

Composite materials, pioneered by aerospace engineering due to their lightweight, strength, and durability properties, are increasingly adopted in the high-performance automotive sector. ...Besides the acknowledged composite components’ performance, enabled lightweighting is becoming even more crucial for energy efficiency, and therefore emissions along vehicle use phase from a decarbonization perspective. ...Research on different carbon footprint sources reduction is increasing, and even the European Composites Industry Association is demanding the development of specific Design for Sustainability approaches.

Using Thermal Simulation to Model the Effects of Wind on the Mars Curiosity Rover Quality and Validation of Digital Designs for Aerospace and Defense Scaling LiDAR Optical Payloads from Drones to Miniature UAVs Using Sintered Fiber Metal Composites for Aircraft Acoustic Attenuation GaN Breaks Barriers RF Power Amplifiers Go Wide and High Test System Ensures Flawless Performance of Military RF Devices The Impact of Video Compression on Remote Cardiac Pulse Measurement Using Imaging Photoplethysmography Remote physiological measurement technique leverages digital cameras to recover the blood volume pulse from the human body.

Developing Object Detection Systems for Autonomous Underwater Vehicles Developing Thermoplastic Composites for Use in Commercial Aircraft An Automated System for Multi-Physics Modeling Taking the Tactical Cloud with You Small Form Factor, Modular Data Centers at the Edge of the Battlefield Remanufacturing Reimagined How Selective Electroplating Extends Service Life and Reduces the Cost of Aerospace Components Satellite Paves the Way for Improved Storm Tracking Solar-Powered Satellite Hardware in Orbit Impact of Satellite Intelligence, Surveillance and Reconnaissance on Modern Naval Operations Determining whether afloat availability of satellite ISR, a technology that is relatively new, fundamentally changed naval operations and if so, to what degree. 3D Data Acquisition Platform for Human Activity Understanding Implementing motion capture devices, 3D vision sensors, and EMG sensors to cross validate multi-modality data acquisition and address fundamental research problems involving the representation and invariant description of 3D data, human motion modeling and applications of human activity analysis, and computational optimization of large-scale 3D data.

Environmental Control Systems (ECS) ducts on airplanes are primarily fabricated from aluminum or thermoset composites, depending on temperature and pressure requirements. It is imperative to fabricate lightweight, cost effective, durable, and repairable systems with minimal tooling.

Bell Helicopter Textron has used fiber reinforced plastic materials in many applications since the earliest appearance of these materials. An overview of past, present and future usage is presented. The discussion includes examples of fuselage, control system, main rotor, energy attenuator and engine cowling/firewall applications.

In order to achieve the low weigh target in the MALE UAV structures, the SHM project has the target to setup a system that, being able to evaluate the current state of the structure, will enable minus conservative assumption in the composite structural design. A lamb wave based procedure has been developed in order to analyze the presence of a barely visible impact defect (BVID). ...The techniques for the damage detections of composite and metallic structures have been developed through extensive numerical-experimental analysis based on lambwave investigation by using piezoelectric sense- actuators.

Helicopter rotor systems are increasingly using flexible composite structures to provide the required control movement for the rotor blades. These structures such as rotor head flex beams can experience very high surface strains, which can be in the order of 15,000 με. ...Helicopter rotor hubs incorporating thick composite flexures are subjected to delamination failures with correlate to bending excursions.

This paper will describe and illustrate how weight and manufacturing costs can be reduced by eliminating uncertainties associated with impact damage to composite parts for aerospace vehicles. Therefore, composite design structures can perform their intended function with the desired confidence at lower weight and cost. ...Probabilistic methods are used in calculating composite part design factors for, and are intended to conservatively compensate for worst case impact to composite parts used on space and aerospace vehicles. ...Probabilistic methods are used in calculating composite part design factors for, and are intended to conservatively compensate for worst case impact to composite parts used on space and aerospace vehicles. The current method to investigate impact damage of composite parts is visual based upon observation of an indentation.

SAE EDGE Research Reports provide examinations significant topics facing mobility industry today including Connected Automated Vehicle Technologies Electrification Advanced Manufacturing