Ultrasonic Joining of Multiple Core Conductors for Automotive Industry

2016 ◽  
Vol 1138 ◽  
pp. 85-94
Author(s):  
Octavian Oanca ◽  
Ioan Aurel Perianu
Keyword(s):  
Automotive Industry ◽  
Digital Imaging ◽  
Ultrasonic Welding ◽  
Mechanical Tests ◽  
Experimental Results ◽  
Dissimilar Joints ◽  
Hybrid Joining ◽  
Potential Use

The paper presents aspects regarding the development of innovative ultrasonic welding technologies at ISIM Timisoara and the advantages of using them in the automotive industry for making similar and dissimilar joints for non-ferrous materials. The experimental results through mechanical tests, microscopy, digital imaging, ultrasonic compacting and hybrid joining of samples Cu-Cu, Al-Al and Al-Cu, highlight the potential use of aluminium as a substitute for multiple core copper conductors in automotive industry.

Structural and Functional Characterization of Ultrasonic Joining for Multiwire Conductors for Automotive Industry

2015 ◽  
Vol 1111 ◽  
pp. 252-259
Author(s):  
Octavian Victor Oanca ◽  
Nicușor Alin Sîrbu ◽  
Ion Aurel Perianu
Keyword(s):  
Electrical Conductivity ◽  
Mechanical Testing ◽  
Automotive Industry ◽  
Digital Imaging ◽  
Functional Characterization ◽  
Ultrasonic Welding ◽  
Experimental Results ◽  
Digital Imaging Microscopy ◽  
General Aspects

This paper presents the general aspects concerning the development of innovative ultrasonic welding technologies at ISIM Timisoara and the advantages of using ultrasonic metal joining, compared with conventional joining methods, in the automotive industry for joining multiwire connectors from copper and aluminium. The experimental results through mechanical testing, electrical conductivity, digital imaging microscopy, ultrasonic compacting, realized on Cu-Cu, Al-Al and Al-Cu samples, underscore the potential for using aluminum as a substitute for copper multiwire connectors in automotive industry.

Corrosion Evolution in Al/Steel Dissimilar Joints

2020 ◽  
Author(s):  
Weiling Wen ◽  
Tian Liu ◽  
Mihaela Banu ◽  
Joseph Simmer ◽  
Blair Carlson ◽  
...  
Keyword(s):  
Automotive Industry ◽  
Emission Reduction ◽  
Spot Welding ◽  
Mechanical Performance ◽  
Dissimilar Joints ◽  
Corrosion Initiation ◽  
Cyclic Corrosion ◽  
Initiation And Propagation ◽  
Corrosion Mechanisms ◽  
Steel Joints

Abstract Al/steel joints are increasingly used in the automotive industry to meet the requirement of energy saving and emission reduction. Among various joining technologies, self-pierce riveting (SPR) and resistance spot welding (RSW) are two promising technologies to fabricate dissimilar joints with stable and high mechanical performance. However, corrosion will occur in these joints inevitably due to different electrochemical properties, which can degrade the surface quality and the mechanical performance, including strength, ductility, etc. In this paper, 1.2 mm AA6022 and 2.0mm HDG HSLA340 are joined by SPR and RSW. After the fabrication of these Al/steel joints, cyclic corrosion tests are performed, which lasts 26 cycles and 48 cycles. By comparing the microstructure of the joints with and without corrosion, different corrosion mechanisms in SPR and RSW are revealed, including the corrosion initiation and propagation.

scholarly journals Experimental Determination of Fatigue Life of Automotive Jounce Bumper

2011 ◽  
Vol 462-463 ◽  
pp. 634-638 ◽  
Author(s):  
R.S. Sidhu ◽  
Aidy Ali ◽  
M.R. Hassan
Keyword(s):  
Fatigue Life ◽  
Experimental Determination ◽  
Automotive Industry ◽  
Compressive Load ◽  
Experimental Results ◽  
Controlled Environment ◽  
Safety And Reliability ◽  
Repetitive Loading

It is evident that most rubber components in the automotive industry are subjected to repetitive loading. Vigorous research is needed towards improving the safety and reliability of the components. The study is conducted on an automotive rubber jounce bumper with a rubber hardness of 60 IRHD. The test is conducted in displacement controlled environment under compressive load. The existing models by Kim, Harbour, Woo and Li are adopted to predict the fatigue life. The experimental results show strong similarities with the predicted models.

Analyzing the effect of landmark vectors in homing navigation

2012 ◽  
Vol 20 (5) ◽  
pp. 337-359 ◽  
Author(s):  
Seung-Eun Yu ◽  
Changmin Lee ◽  
DaeEun Kim
Keyword(s):  
Mobile Robots ◽  
Significant Influence ◽  
Experimental Results ◽  
Retinal Images ◽  
Navigation Algorithms ◽  
Homing Performance ◽  
Potential Use

The development of an autonomous navigating robot is a challenging task. Motivated by the performance of insects successfully returning to the nest, researchers have studied bio-inspired navigation algorithms for their potential use in mobile robots. In this paper, we analyze landmark-based approaches, especially Distance Estimated Landmark Vector (DELV), Average Correctional Vector and Average Landmark Vector methods, that use landmark vectors for visible environmental landmarks. We evaluated the homing performance of various landmark vector methods with surrounding landmarks under occlusion and found that the occluded or missing landmarks have a significant influence on the performance. We also developed a landmark vector algorithm with a visual compass that uses only retinal images without a reference compass. From our experimental results, we conclude that the DELV shows robust homing navigation performance with missing or occluded landmarks among landmark vector methods.

Delamination Patch Detection in FRP Composite with 3×3 Coupler Based Mach-Zehnder Interferometer

2010 ◽  
Vol 163-167 ◽  
pp. 2488-2492
Author(s):  
Ying Xu ◽  
Bi Qin Dong ◽  
Yi Jiang
Keyword(s):  
Optical Fiber ◽  
Total Elongation ◽  
Mechanical Tests ◽  
Neutral Axis ◽  
Experimental Results ◽  
Zehnder Interferometer ◽  
Impulse Loading ◽  
Frp Composite ◽  
Axis Position ◽  
Mach Zehnder Interferometer

A 3×3 coupler based Mach-Zehnder Interferometer is used for delamination patch detection in FRP composite. Mechanical tests are performed and the sensing arm of the interferometer is embedded along the neutral plane of the laminate. A quasi-impulse loading is applied and the total elongation of the embedded optical fiber is measured as a function of load position. When a delamination is present, the shift of neutral axis position can be clearly reflected in the fiber integral strain versus load position plot. Experimental results demonstrate the feasibility of detecting both the size and location of delamination patch with the proposed technique.

Numerical and Experimental Analysis of Adhesively Bonded Stiffened Panels Subjected to In-Plane Compression Loading

2016 ◽  
Vol 1135 ◽  
pp. 140-152
Author(s):  
Mayara Bortolotti Rossini ◽  
Maurício Vicente Donadon
Keyword(s):  
Failure Load ◽  
Progressive Failure ◽  
Mechanical Tests ◽  
Buckling Load ◽  
Experimental Results ◽  
Superior Performance ◽  
Adhesively Bonded ◽  
Stiffened Panels ◽  
Compression Loading ◽  
Plane Compression

This paper presents a numerical and experimental study on the pre and post-buckling behavior of adhesively bonded stiffened panels subjected to in-plane compression loading. An experimental programme was carried out to characterize the buckling load, buckling modes and collapse loads. The mechanical tests were performed in the Aerospace Structures Laboratory at ITA. The structural performance of the bonded stiffened panels in terms of buckling and collapse loads was compared to conventional riveted stiffened panels. Finite element models accounting for material, geometrical nonlinearities as well as progressive failure in the bonded interface were developed and validated experimentally. A good agreement between numerical and experimental results was found for buckling and collapse loads through number of semi-waves and measured strains. The experimental and numerical results indicate a superior performance in buckling load and failure load of the bonded stiffened panels over the riveted panels. Both numerical and experimental results showed that the bonded stiffened panels had over 19% higher failure load in comparison with the riveted panels.

scholarly journals Experimental results of single screw mechanical tests: a follow-up to SAND2005-6036.

2006 ◽  
Author(s):  
Sandwook Lee ◽  
Kenneth L Lee ◽  
John S Korellis ◽  
Sam X McFadden
Keyword(s):  
Mechanical Tests ◽  
Experimental Results ◽  
Single Screw

Reconditioning by Welding of Rims Manufactured from Nonferrous Alloys

2014 ◽  
Vol 1029 ◽  
pp. 61-66 ◽  
Author(s):  
Nicoleta Bularda ◽  
Teodor Heput
Keyword(s):  
Automotive Industry ◽  
Mechanical Characteristics ◽  
Mechanical Tests ◽  
Base Metals ◽  
Adequate Quality ◽  
Nonferrous Alloys ◽  
The Impact ◽  
Unsprung Mass ◽  
Co Emission

At present, in the automotive industry, the trend on the world plane is to fit on the wheels with rims made from nonferrous alloys, based on aluminum, magnesium or titanium. These rims have the advantage that they are lighter than the same rims made from steel, reducing the unsprung mass of the vehicle, and increasing the vehicle performances, that lead to the better handling, the faster braking and the better acceleration. Also, by using the rims made from nonferrous alloys, the increasing of the fuel consumption efficiency and the reducing of the carbon monoxide (CO) emission are obtained. During the traffic, the wheels (rim + tyre) can be subjected to accidental collisions, such as the impact with the pavement, leading to damages of the rims, which must be reconditioned. The paper presents the results of structural examinations and mechanical tests, made on car rims made from nonferrous alloys, degraded and reconditioned by specific welding technologies. The structural and mechanical characteristics determined in the zones reconditioned by welding are at the level of the base metals used to made the investigated rims, that confirm the adequate quality of them, and a low risc to cracking.

Towards Superlubricity Under Boundary Lubrication

2005 ◽  
Author(s):  
J. M. Martin ◽  
M. I. De Barros Bouchet ◽  
T. Le Mogne ◽  
M. Kano
Keyword(s):  
Boundary Lubrication ◽  
Automotive Industry ◽  
Research Field ◽  
Low Friction ◽  
Carbon Coatings ◽  
Dlc Coatings ◽  
New Research ◽  
Engine Components ◽  
Potential Use ◽  
Lubrication Conditions

Fuel economy and reduction of harmless elements in lubricant are becoming crucial in the automotive industry. An approach to respond these requirements in engine components is the potential use of low friction coatings exposed to specific boundary lubrication conditions. Superlubricity is a new research field in tribology, dealing with very low friction values, typically below 0.01, and this even in dry or vacuum conditions. It is to be noticed that any friction coefficient below 0.001 is hardly measurable with the equipment at hand. Superlow friction was already experimentally observed only in ultrahigh vacuum and inert gas environment, with pure molybdenite (MoS2) coatings [1] and in presence of some hydrogenated DLC coatings [2]. Under boundary lubrication, we show here that the coupling of hydrogen-free carbon coatings and selected organic lubricant additives permits to reach friction values approaching superlubricity and also a wearless behavior.

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