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Viewing 1 to 30 of 14599
2017-04-06
Event
BE & D cover several important areas that are related to vehicle body, including its components such as instrument panel, steering column and wheel, seats, hood, decklid, transmission cross-member, hard mounted chassis, CRFM, etc. Topics included are: Novel concepts, Analysis, Design, Testing, Predictions of strength, stiffness, and fatigue life, welding methods, vehicle body quality, durability, reliability, safety, ride & handling, NVH, aerodynamics, mass reduction, as well as fuel economy.
2017-04-06
Event
BE & D cover several important areas that are related to vehicle body, including its components such as instrument panel, steering column and wheel, seats, hood, decklid, transmission cross-member, hard mounted chassis, CRFM, etc. Topics included are: Novel concepts, Analysis, Design, Testing, Predictions of strength, stiffness, and fatigue life, welding methods, vehicle body quality, durability, reliability, safety, ride & handling, NVH, aerodynamics, mass reduction, as well as fuel economy.
2017-04-06
Event
Focuses on innovative and improved fatigue methodologies and problem-solving techniques on automotive components, assemblies and vehicles based on material characterization, testing and CAE (Computer Aided Engineering) analysis.
2017-04-06
Event
Focuses on innovative and improved fatigue methodologies and problem-solving techniques on automotive components, assemblies and vehicles based on material characterization, testing and CAE (Computer Aided Engineering) analysis.
2017-04-05
Event
Focuses on innovative and improved fatigue methodologies and problem-solving techniques on automotive components, assemblies and vehicles based on material characterization, testing and CAE (Computer Aided Engineering) analysis.
2017-04-05
Event
Focuses on innovative and improved fatigue methodologies and problem-solving techniques on automotive components, assemblies and vehicles based on material characterization, testing and CAE (Computer Aided Engineering) analysis.
2017-04-04
Event
Key words: residual stress, retained austenite, x-ray diffraction, neutron diffraction, induction hardening, carburizing, shot peening, quench and template, residual stress simulation, residual stress test
2017-04-04
Event
Focuses on innovative and improved fatigue methodologies and problem-solving techniques on automotive components, assemblies and vehicles based on material characterization, testing and CAE (Computer Aided Engineering) analysis.
2017-04-04
Event
Focuses on innovative and improved fatigue methodologies and problem-solving techniques on automotive components, assemblies and vehicles based on material characterization, testing and CAE (Computer Aided Engineering) analysis.
2017-04-04
Event
This technical session focuses on fundamental and applied research that lowers frictional energy losses and enhances reliability and durability of automotive components. The topics include, but not limited to engine and drivetrain tribology, seals, bearing and gear lubrication, materials tribology, surface engineering, lubricants and additives, computer-aided tribology, tribotesting, as well as friction, wear and lubrication fundamentals.
2017-04-03 ...
  • April 3-4, 2017 (8:30 a.m. - 4:30 p.m.) - Detroit, Michigan
  • October 12-13, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
The transportation industry, including motor vehicles, aircraft, rail, marine, commercial, off-road and defense vehicles, as well as infrastructures, energy sectors, raw materials, manufacturing, health and food industries all experience significant issues with corrosion which results in billions of dollars of loss each year. Corrosion education and prevention is essential to improve and increase the service life of parts and components which may have a significant impact on the economy of various industries and nations.
2017-03-28
Technical Paper
2017-01-0331
Qiuren Chen, Haiding Guo, Katherine Avery, Xuming Su, HongTae Kang
Fatigue crack growth tests have been carried out to investigate the mixed mode fatigue crack propagation behavior of an automotive structural adhesive BM4601. The tests were conducted a compound CMM (Compact Mixed Mode) specimen under load control with 0.1 R ratio and 3Hz frequency. A long distance moving microscope was employed during testing to monitor and record the real time length of the fatigue crack in the adhesive layer. The strain energy release rates of the crack under different loading angles, crack lengths and loads were calculated by finite element method. The pure mode I and mode II tests show that an equal value of mode I strain energy release rate results in over ten times higher FCGR (Fatigue Crack Growth Rate) than the mode II stain energy release rate does. The mixed mode tests results show that under a certain loading angle, the mixed mode FCGR is changed by changing the load, which is contrary to the find in pure mode I and mode II tests.
2017-03-28
Technical Paper
2017-01-0339
Sandip Datta, Neil Bishop, Karl Sweitzer, Alexander Atkins
For many automotive systems it is required to calculate both the durability of the part and to rule out the possibility of collision of individual components during severe base shake vibration conditions. Advanced frequency domain methods now exist to enable the durability assessment to be undertaken fully in the frequency domain and utilizing the most advanced and efficient analysis tools. In recent years new capabilities have been developed which allow hyper sized models to be processed onto which multiple correlated loading is applied. The most advanced stress processing (eg, complex von-Mises) and fatigue algorithms (eg, Strain-Life) are now included. Furthermore, the previously required assumptions that the loading be stationary, Gaussian and random have been somewhat relaxed. For example, mixed loading like sine on random can now be applied.
2017-03-28
Technical Paper
2017-01-0461
R. Rajendran, Ravikumar N, S.S.M Abdul Majeed
Brake disc provides friction force with minimum weight loss on application of brake. The pad material only experiences more wear and friction. Disc and pad materials are selected to give a stable and high coefficient of friction (0.25-0.40). COF is directly proportional to braking force generated and inversely proportional to the stopping distance. Brake pad is mainly produced from asbestos materials. Asbestos is an excellent material for brake pad application.. Considering the environmental pollution and human health safety, the asbestos cannot be used and there is a need to find an alternate material. The aim of the study is to identify a new material for replacement of pad material in practice. In this study, wear, hardness and friction properties of E glass fibre with epoxy resin and cashew friction dust composite are studied and compared with brake pad material in practice.
2017-03-28
Technical Paper
2017-01-0355
Edinilson Alves Costa, Neil Bishop, Valdir Cardoso
In most aspects of mechanical design related to a motor vehicle there are two ways to treat dynamic fatigue problems, that is: time domain vs. frequency domain approach. Time domain approaches are the most common and most widely used especially in the automotive industries and accordingly it is the method of choice for the fatigue calculation of welded structures. In previous paper frequency approach has been successful applied showing a good correlation with the life and damage estimated by the time one; in this paper the same comparative process has been applied but now extended specifically to welded structures. Both frequency domain approach and time domain approach are used for numerically predicting the fatigue life of the seam welds of a thin sheet powertrain installation bracketry of a commercial truck submitted to variable amplitude loading. Predictions results are then compared with bench tests results, and their accuracy are rated.
2017-03-28
Technical Paper
2017-01-0348
Mani Shankar, I V N Sri Harsha, K V Sunil, Ramsai Ramachandran
In an automobile, road loads due to tire-road interaction are transferred to vehicle body through suspension. This makes suspension a critical component from the body durability perspective. During vehicle design and development, optimization of suspension parameters to suit ride and handling performance is a continuous and iterative process. These changes on suspension can affect vehicle body durability performance. This paper tries to establish a process to evaluate the effect of changes in suspension parameters on body durability, thus helping in understanding the impact of these changes. The process starts with virtual model building in Multi Body Dynamics software. The base line model is co-related with testing using responses like spring displacement at suspension, acceleration and strain data at the vehicle body.
2017-03-28
Technical Paper
2017-01-0350
Sanket Prakash Inamdar, Manoj R Ukhande, Prashant Date, Madan U Takale, Raj Kumar Prasad Singh
It is a necessity of modern forging industries to explore new materials for hot forging dies, which gives better quality of forging with extended fatigue life and less economic aspects. HiperDie Steel is one of the material for modern metal forming industries, which mollifies all the benchmarks and requirements. Pre-Mature fatigue failure of forging dies is always an unpredictable and economical damage for any metal forming industry. HiperDie Steel is a high strength material to avoid die cracking during complex phenomenon of hot forming process. HiperDie steel, which when subjected to load, will get softened and this is strain softening. In this paper, numerous experiments have been carried on HiperDie steel material to evaluate cyclic Stress - strain behavior of this material. This research leads us to evaluate and explain phenomenon regarding strain softening and its behavior during low cycle fatigue test.
2017-03-28
Technical Paper
2017-01-0344
Christoph Bleicher, Rainer wagener, Heinz Kaufmann, Tobias Melz
For the design of thick-walled nodular cast iron components the fatigue assessment especially in the context of local imperfections in the material is a challenging task. Not only the cyclic material behavior of the sound baseline material but also the cyclic behavior of materials with imperfections like shrinkages, dross and chunky graphite needs to be considered during the design process of cast iron components. In addition to that, new materials like solid solutions strengthened alloys offer new possibilities in lightweight design but need to be assessed concerning their fatigue strength and elastic-plastic material behavior. If a safe and reproducible fatigue assessment for any component cannot be performed and a secure usage is therefore not given, the cast components are mostly rejected, what leads to a loss of additional material, energy and money for recasting the component.
2017-03-28
Technical Paper
2017-01-0330
Rainer wagener, Tobias Melz
Fatigue testing is known as time consuming and therefore it should be a target of fatigue research to accelerate the derivation of fatigue properties. Due to the claimed properties strain or load controlled fatigue tests have to be performed. Carrying out load controlled fatigue tests is necessary to derive the influence of mean stresses and notches on the fatigue strength and life of different materials and joining technologies. In case of material samples increasing test frequencies could be a proper way to accelerate the fatigue testing as long as the increased test frequencies have no influence on the resulting fatigue life. In case of strain controlled fatigue tests it is not possible to increase the test frequencies in order to accelerate the fatigue tests. Therefore the Incremental Step Test allows deriving the cyclic stress-strain-curve with only one test run.
2017-03-28
Technical Paper
2017-01-0470
Lunyu Zhang, Shin-Jang Sung, Jwo Pan, Xuming Su, Peter Friedman
Structural stress solutions for flow drill screw (FDS) joints in lap-shear specimens of aluminum 6082-T6 sheets with and without clearance hole (without and with gap) are investigated. Analytical structural stress solutions at the critical locations of FDS joints based on the analytical solutions for a rigid inclusion in a thin plate under various loading conditions are first obtained. Finite element analyses are then conducted to verify the analytical solutions. The fatigue life estimations of the FDS joints in lap-shear specimens with and without clearance hole (without and with gap) based on the structural stress solutions are in agreement with those of the experimental results.
2017-03-28
Technical Paper
2017-01-0329
Ayhan Ince
Multiaxial fatigue failures often happens along driveline and suspension notched components of off-road ground vehicles. Fatigue life prediction of such notched components requires detailed knowledge of local stresses and strains at notch regions. The notched components that are often subject to multiaxial loadings in services experience complex stress and strain responses. Fatigue life assessment of the components utilizing non-linear Finite Element Analysis (FEA) require impractically long computation times and excessive data storage. The lack of more efficient and simpler methods of elastic-plastic stress-strain analysis may lead to the overdesign or earlier failures of the components or costly experiments and inefficient non-linear FEA. An approximate computational model is developed to calculate actual elasto-plastic stress-strain responses of notched components using linear-elastic FEA solution.
2017-03-28
Technical Paper
2017-01-0372
Guang Cheng, Kyoo Sil Choi, Xiaohua Hu, Xin Sun
Advanced High Strength Steels (AHSS) represent an important technology in efforts to lightweight vehicles for improved fuel-efficiency and occupant safety. Main difference between AHSS and conventional high strength steels is their microstructures. Conventional steels are single phase materials whereas AHSS are primarily multiphase materials having several different phases in it, depending on its chemical composition and heating process. For this reason, the microstructure-based modeling methods have been usually adopted for study of AHSS. It is well known that, along with the microstructure itself, the constituent phase properties (i.e., stress-strain curves) also play a crucial role in the microstructure-based modeling. Therefore, it is important to accurately measure/estimate the phase properties of constituent phases of AHSS.
Viewing 1 to 30 of 14599

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