Criteria

Text:
Sector:
Display:

Results

Viewing 1 to 30 of 959
2016-04-05
Journal Article
2016-01-0497
Brian Falzon, Wei Tan
Abstract The development of the latest generation of wide-body carbon-fibre composite passenger aircraft has heralded a new era in the utilisation of these materials. The premise of superior specific strength and stiffness, corrosion and fatigue resistance, is tempered by high development costs, slow production rates and lengthy and expensive certification programmes. Substantial effort is currently being directed towards the development of new modelling and simulation tools, at all levels of the development cycle, to mitigate these shortcomings. One of the primary challenges is to reduce the extent of physical testing, in the certification process, by adopting a ‘certification by simulation’ approach. In essence, this aspirational objective requires the ability to reliably predict the evolution and progression of damage in composites. The aerospace industry has been at the forefront of developing advanced composites modelling tools.
2016-01-01
Journal Article
2015-01-9084
Seyedmohammad Shams, Peng Yang, Rani Elhajjar
Abstract The disk spring offers the potential of significant weight savings when designed with continuous fiber reinforced composite materials. The internal stresses in a disk spring are ideally suited for composite material application due to their superior resistance to in-plane and bending stresses. In this study, a composite laminate disk spring is designed, analyzed and fabricated to take advantage of the low specific strength and weight and high damage tolerance of composite laminates. The design of the disk composite spring considers effects of the laminate stacking sequence and the geometric variables on the disk spring's mechanical performance. A continuum damage finite element analysis approach is used to understand the damage initiation and evolution as a function of applied load. Experimental analysis and a progressive damage analysis based on virtual crack closure technique are performed to evaluate the damage tolerance of the disk spring under fatigue loadings.
2016-08-16
Magazine
Types of aircraft passenger-escape systems An overview of existing and potential new methods for assuring aircraft occupant safety. SAE Skill India Initiative: S2I2 A new SAEINDIA collaboration aims to help young engineers acquire "industry-ready" skills. A technology-driven sustainable-agriculture solution Pumping more air into the cylinder is key to solving the CAFE puzzle, and engineers are hard at work figuring out the best ways to do it with turbocharger and supercharger innovation. Rotorcraft icing computational tool development 3D printing machines can't be built fast enough In the additive-manufacturing world, the costs of components are dropping, the technology is becoming more reliable and parts are fabricated faster, allowing industries beyond aerospace to adopt additive technologies, says Oak Ridge Lab's Ryan Dehoff.
2010-08-25
Magazine
Automation leads advances in aerospace composites usage Increased productivity is the focus of today's automation for composites made of carbon-fiber reinforced plastics.
2010-08-11
Magazine
Taking a deeper look at NDT Rapid adoption of composties in aircraft has accelerated the need for newer and faster nondestructive testing methodologies. We look at some of the issues.
2010-11-10
Magazine
Tolling for large, light composite parts Aerospace engineers use carbon-fiber composites to create larger, unified parts to replace many smaller parts fastened together. As composite parts get larger, tooling to make them is evolving.
2010-12-15
Magazine
New materials-new tests material development calls for new testing techniques to be used, aided by key service suppliers.
2012-02-15
Magazine
Bright outlook for glass cockpits Cockpits are adopting larger screens and touch input, using modularity to ease upgrades. Composites give copters a lift Design, fabrication, and analysis of a tail rotor blade made of composite laminated materials for a heavy transport helicopter. Taming overruns with simulation For aerospace projects, cost overruns and program delays start in the concept and proposal stage. How could using today's advanced CAE simulations earlier reduce that risk? Going modular with airborne radar Innovative approaches to solving the affordability challenge posed by too many specialist airborne surveillance systems. Efficient & effective leadership Frank O. Klegon, a 30-year SAE member and former product development VP at Chrysler, brings 'customer first' approach to term as SAE International's chief elective officer.
2012-12-12
Magazine
Joining metal/composite structures The interference-fit bolted joining of hybrid metal/composite can greatly improve the fatigue life of such joints, according to Chinese researchers.
2012-08-15
Magazine
Everything's looking up for aircraft with Internet connections Satellites will make global connectivity possible. Composite bonds put to the test The application of adhesive bonding as a joining technology for CFRP aircraft structures is essential for the realization of novel lightweight design concepts. Aerospace leads in additive manufacturing The unique advantages of making metal parts from powder-bed additive manufacturing are looking attractive to engine manufacturers. Europe's aerospace sector at a crossroads Europe is facing a massive black hole in its future defense procurement portfolio. What will replace today's fighters and trainers when the present order backlogs have been produced?
2012-01-25
Magazine
Alternative fuels heat up This is a rich time for combustion researchers. The need for better fuel efficiency and improved emissions has never been greater. New software model to help engine makers meet diesel soot standards Simulation enables engineers to predict particulate formation early in the design process.
2011-06-29
Magazine
Machine tools meet new materials If you're in the business of making machine tools for aerospace applications, you're probably working on improvements in cutting tough metals and composites.
2011-07-27
Magazine
Material matters While new airplane designs now entering service will use more carbon-fiber composites than ever, it is no time to count out aluminum, as promising new versions of alloys such as aluminum-lithium gain ground.
2015-12-01
Magazine
Uncertainty quantification The technique is a must for next-generation simulation tools. Oil-pump sizing Researchers from Hinduja Tech investigate options for low friction and power consumption. The future of Indian commercial aviation The growth in traffic that airport modernization has supported has also made a significant contribution to the local and national economies, while the improved infrastructure has been positive for the perception of India in the global market. Driving EVs toward lower cost The race ison to reduce battery and electric-drive systems cost while improving efficiency. Powering on Rolls-Royce's Chief Engineer discusses new technologies that inspire current R&D design and evaluation work as part of its strategic roadmap for future big commercial programs. HMIs extend beyond the cab Telematic functions are being integrated into multi-function user interfaces.
2014-11-05
Magazine
Adaptive trimming of composite parts Some of the techniques used in the Adaptive Manufacturing System are normal aerospace processes. The unique and enabling process is the scanning and adaptive trimming.
2014-12-01
Magazine
Materials Infusing Lightweight Composite Structures Business Jets Business Jets Bounce Back
2015-04-01
Magazine
Propulsion Fanjet Evolution - the Next Steps Composites Dry Drilling Composites Using Carbon Dioxide Cooling
2015-12-01
Magazine
Touch and go Avionics developments are changing life in the cockpit and at airborne work stations Sandwich cores for the future Decreasing weight while increasing strength is always critical, from airliners to future space missions to Mars. Research in sandwich cores today may lead to radical improvements in the future.
2015-06-01
Magazine
Regional and bizjets refined and redefined As the regional and business jet markets steadily rebound, so too do the propulsion technologies that will provide airframers and their customers competitive advantage. Getting it right with composites With composites now a mainstay in most new aircraft designs, the engineering emphasis has switched from understanding if they work to thinking through the most efficient way to manufacture them, such as using design-for-manufacturing software.
2011-02-09
Magazine
Composite simulation helps fill gaps There is no turning back from using carbon-fiber reinforced plastics and other composite materials for aerospace parts. Simulation providers are finding new opportunities to help reduce cost and improve efficiencies in designing and making aerospace parts made of composites. Shifting gears smoothly Ric Kleine, a 30-year veteran of Cummins Inc. and former SAE Commercial Vehicle VP, seeks continuity over change as he moves into SAE's driver's seat.
2011-03-02
Magazine
Materials become design, design becoems function Once things you could hold in your hand, materials have become more design ideas than entities, and the designs themselves are transforming into operational activity. The next steps in flight A look at sero engine and assembly developments as commercial airframe and engine manufacturers begin the biggest battle of all-for next-generation short-haul jet aircraft sales. NextGen Today and tomorrow The FAA has reached a major milestone on the Next Generation Air Transportation System initiative to modernize America's National Airspace System. Stacking the material deck for the 787 Combinations such as composites and titanium being used in future aircraft programs can be very challenging when drilling holes during manufacturing and assembly operations.
2009-08-05
Magazine
The edge on cutting aerospace composites With the increasing use of high-performance composites, such as carbon fiber-reinforced plastics in aerospace in recent years, machinists are continuing to devise the best way of cutting them.
2010-03-03
Magazine
Advances in out-of-autoclave As carbon-fiber composites continue to gain weight share on modern aircraft, reducing the need for autoclave cures becomes more important.
2010-06-16
Magazine
A closer look at composites FEA contributes to design and manufacturing efficiency of complex composite aircraft assemblies.
2010-06-02
Magazine
Composites take flight Aerospace looks at newer composites and new applications in the race to reduce weight and maintenance costs.
2013-07-03
Magazine
Going lean from scratch Embraer applied lean manufacturing concepts during the planning and construction of a new composites assembly line for its Legacy 500.
2013-11-06
Magazine
Simulation supports aircraft safety From analyzing crashes to hard landings, the industry is evolving in how much it relies on CAE simulation to provide safer aircraft designs. As aircraft systems become more complex, simulation itself is evolving as well.
2014-01-29
WIP Standard
AIR6292
The SAE Aerospace Information Report (AIR) is intended to be used as a process verification guide for evaluating implementation of key factors in bonded repair of fiber reinforced composite structure in a repair shop environment. The guide will be used in conjunction with a regulatory approved and substantiated repair, and is intended to promote consistency and reliability.
Viewing 1 to 30 of 959

Filter

  • Range:
    to:
  • Year: