Transfer Path Analysis

Understanding the root causes of noise and vibration problems The LMS Test.Lab Transfer Path Analysis solution provides a systematic approach to test-based engineering processes and focuses engineering efforts on the components that matter the most. As a method to fully understand vibro-acoustic behavior, TPA assists in troubleshooting vibro-acoustic issues and setting performance targets for each critical component. In complicated structures with various sub-assemblies ( such as cars, aircrafts or ships) vibro-acoustic phenomena at a certain location may have been caused by a remote vibration source. For example, the energy from a car engine is transmitted into the passenger cavity by a number of different routes: from the engine mounts, the exhaust system connection points and indirectly even via the drive shafts and the wheel suspension. Airborne contributions from the intake or exhaust system may also add to the vibro-acoustic issues. These noise and vibration problems can be addressed by enhanced transfer path analysis techniques, which help engineers detect root causes of such issues early on in the design cycle. LMS Test.Lab provides a highly efficient solution to identify noise problems and their origins as well as quickly evaluate design improvements. From troubleshooting to root cause analysis Transfer Path Analysis or TPA is used to identify and assess structureborne and airborne energy transfer routes – from the excitation source to a given receiver location. Once the sources and their paths have been quantified and modeled, it is a relatively straightforward design task to optimize the system. Transfer path analysis sets out to quantify the various sources and their paths and figure out which ones are important, which ones contribute to the noise issues and which ones cancel each other out. The source-transmitter-receiver model: a systematic approach The LMS Test.Lab Transfer Path Analysis solution is based on the source-transmitter-receiver methodology. All noise and vibration issues originate at a source and are transmitted through airborne or structure-borne transfer paths to a given receiver location where the vibro-acoustic disturbances are perceived. Solving vibro-acoustic issues can be done by acting on the source, the transmission path or the receiver, or by addressing several of these elements. The goal of transfer path analysis is to calculate the vector contribution of each energy path from the source to the receiver. Components along that path can be identified and thus modified to solve a specific problem. Alternatively, TPA helps optimize the product design by choosing effective and desirable characteristics for these components to avert noise and vibration problems. The most complete solution package on the market LMS Test.Lab Transfer Path Analysis is packed with enhanced features that promise to help every test department save time and resources. With the broadest portfolio of TPA solutions on the market, LMS Test.Lab helps customers tackle issues from every possible angle – from simple systems to complex structures. LMS Test.Lab TPA features a wide range of TPA techniques, such as LMS Test.Lab Single Reference Transfer Path Analysis and Airborne Source Quantification, LMS Test.Lab Multi-reference Transfer Path Analysis, LMS Test.Lab OPAX Transfer Path Analysis solution and LMS Test.Lab Time Domain TPA. Managing vast amounts of data LMS Test.Lab Transfer Path Analysis is designed to manage data collected during measurement campaigns in a convenient and efficient way. Using embedded documentation, like function class or point IDs, transfer functions and operational data are automatically sorted through easy transfer path model definition. The automated procedures eliminate data handling errors and make the process as productive as possible. Similar processing can be simultaneously applied to different operating conditions. For engine transfer path analysis, engineers will typically prefer to analyze the most important orders during run-up or run-down. Working on spectra in different formats ( spectrum, autopower, 1/ 3 octave) is also completely supported by the solution. LMS Test.Lab Transfer Path Analysis focuses on ease-of-use and productivity. Engineers appreciate the workflow-oriented GUI, the powerful data management that continuously checks data and minimizes translation issues and operator errors. The productivity enhancing features like active displays make it possible for any person in the organization to dive into the data and investigate it from all possible angles to achieve the best understanding of the TPA results. Easy results interpretation LMS Test.Lab Transfer Path Analysis helps users perform data processing and results interpretation fast and efficiently. The enormous amount of TPA results is easily accessibly and clearly organized. For each operational condition and transfer path, the operational forces can be retrieved and accessed. To quickly visualize the relative importance of the different paths, a color display shows the amplitude of the partial contributions for all selected paths as a function of rpm or frequency. The LMS solution helps users analyze the interior acoustic response both objectively and subjectively and identify the disturbing spectral components or even the lack of masking constituents. For those frequencies, the operating and laboratory data are combined to quantify the contributions of the various sources and their paths. Once the sources and their paths have been quantified and modeled, it is a relatively straightforward design task to optimize the system. The various TPA techniques can be expanded to support “ what-if” scenarios, whereby loads and/ or transfer paths can be interactively modified and visually evaluated in real-time. Multiple modifications can be compared against each other, by a single mouse-click, which greatly enhances the target setting process. Backed by years of experience The solution incorporates years of market leadership, assuring maximum data quality and avoiding operator errors. It also provides enough engineering freedom to tune the process to the specific needs of each problem. With the final contribution analysis, the system can be examined in multiple dimensions, using comprehensive 4D displays. LMS Test.Lab Transfer Path Analysis is based on extensive consolidated hands-on experience, which has been translated into innovative extensions that help engineers solve mission-critical noise and vibration issues. Software engineering memiliki misi menyediakan quality engineering software untuk para engineer sehingga mereka dapat lebih produktif dalam pekerjaannya. Kami juga membuatkan aplikasi software engineering yang customized / khusus , dengan harga yang bersaing. Contact us: 0815 614 1954, 0811 891 101, 0817921 7081