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Technical Paper

An On-line path correction method based on 2D laser profile measurement for Gluing Robot

2022-03-08
2022-01-0016
Gluing is an essential fastening step in the field of aircraft assembly except for riveting and bolting. Generally, the robotic programs of gluing are generated in CAM environment. Due to the positioning errors and deformation of the workpiece to be glued in the fixture, the nominal pose and the actual pose of the workpiece are no longer consistent with each other. The Robot trajectory of dispensing glue are adjusted manually according to the actual pose of the workpiece by robot teaching. In this paper, an on-line gluing path correction method is developed by 2D laser profile measurement. A pose calibration method for 2D laser profiler integrated into a gluing robot by measuring a fixed center point of a standard ball is proposed to identify the position and orientation of the laser sensor, which enables the accurate transforming coordinates between the robot frame and the sensor frame. Meanwhile, the pose of the gluing tool mounted on the end of the robot is calibrated.
Technical Paper

Accuracy Analysis for a Flow Line Process using a Mobile Holding Fixture for Machining CRFP Components

2022-03-08
2022-01-0041
The aerospace sector is challenged to produce airplanes more efficiently and resiliently in the future. This leads to an increasing demand for improving productivity and flexibility as well as providing solutions for sustainable developments. A bottleneck in production is the machining of large-scale components. Apart from the machining tasks, non-productive tasks like fixture adjustment, component handling, referencing and localization are performed within the machining station and can constitute up to 50% of the overall workload. In the UniFix project, Fraunhofer IFAM is participating in the development of a mobile fixture system for large-scale aircraft components, like vertical tail plane and landing flap components of the single aisle aircrafts.
Technical Paper

Prediction of Residual Stresses in Direct Metal Laser Sintering of Ti-6Al-4V Alloy by Numerical simulation

2022-03-08
2022-01-0047
This paper presents the efforts made in numerical simulation of residual stresses that are induced in Direct Metal Laser Sintering (DMLS) of Ti-6Al-4V alloy structures. The DMLS process is one of the Additive manufacturing processes that is widely used in the manufacturing of metal bodies used in automotive, aerospace and medical applications. However, the major challenge faced in this process is residual stresses that are caused by large thermal gradients. The DMLS manufactured Ti-6Al-4V has lower ductility when compared to hot work ad martensite structure formed due to the rapid solidification. Residual stresses imposed in them are a key contributor to these characteristics, Despite the fact that post-processing techniques such as hot working can alleviate some of the stresses, Some residual stress effects, like as warping and thermal stress-related cracking, are unaffected by post-processing.
Technical Paper

Modeling Compressor Pressure Ratio vs. Mass Flow Rate Map Including Choke line and Surge line Using Scaling Theorem and Physics-based Methods

2022-03-08
2022-01-0029
The production of a compressor map for turbocharged engine was important for turbocharger and engine design. After the production of the compressor map, the engine performance can be simulated and analyzed, and the powertrain design can be more reliable. Below showed was a procedure to obtain the compressor map (pressure ratio vs. mass flow rate) from scaling of the available compressor family with similar shape and design based on scaling theorem. In this paper, a compressor scaling model was established through a series of compressors. The non-dimensional compressor head coefficient vs. mass flow coefficient was modelled. According to the scaling law, such scaling model was universal for the similar family compressors with similar shape and design. As a result, the compressor pressure ratio and mass flow rate can be deducted from those non-dimensional parameters. After the compressor scaling model was established, a process to select the compressor for engine application was showed.

Exhibit & Sponsor - Noise and Vibration Conference & Exhibition

2022-01-18
Learn more about how you can exhibit and sponsor at the 2023 Noise and Vibration Conference & Exhibition (NVC). Connect with a targeted global audience that includes high-level decision makers, influencers, and purchasers involved in NVH and sound quality. You’ll engage with the entire supply chain community – from OEMs and tier suppliers to manufacturers, material developers, researchers, and more – to demonstrate the latest scientific discoveries in NVH technology.
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COMVEC™

2022-01-18
COMVEC™ conference is the only North American event that addresses vehicles and equipment spanning on-highway, off-highway, agricultural, construction, industrial, military, and mining sectors.

Contact - 2022 Government Industry Meeting

2022-01-18
Annual conference government policy, regulatory makers, automotive industry neutral forum discuss US government regulation, technology, customer acceptance future vehicle design. industry event safety, emission control, fuel efficiency, automated vehicles.

Exhibit/Sponsor - 2022 Government/Industry Meeting

2022-01-18
Annual conference government policy, regulatory makers, automotive industry neutral forum discuss US government regulation, technology, customer acceptance future vehicle design. industry event safety, emission control, fuel efficiency, automated vehicles.
Event

Exhibit & Sponsor - COMVEC™

2022-01-18
Explore the exhibit and sponsor opportunities at one of the influential commercial vehicle events, 2022 COMVEC™ conference.

Evolving to MedDev 2022

2022-01-18
Evolving to MedDev provides a new opportunity for executives in aerospace, automotive and medical devices companies to connect and develop long-term growth strategies and find ways to meet the increased short-term demand for medical supplies

Exhibit/Sponsor - 2022 Government/Industry Meeting

2022-01-18
Annual conference government policy, regulatory makers, automotive industry neutral forum discuss US government regulation, technology, customer acceptance future vehicle design. industry event safety, emission control, fuel efficiency, automated vehicles.

SAE International

2022-01-18
Evolving to MedDev provides a new opportunity for executives in aerospace, automotive and medical devices companies to connect and develop long-term growth strategies and find ways to meet the increased short-term demand for medical supplies
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