Engineering and Scientific Software Reference Materials

Description: This seemingly simple question is actually quite fundamental. To answer the question we need to consider sound intensity. Now sound intensity is defined as "the average rate of flow of energy through ...

Description: Normally when we are analysing a signal it is a purely real signal, that is it has no imaginary part. A classic example is of course a sine wave. When we analyse a signal with a Fourier transform, ...

Description: Ongoing advances in software and hardware, combined with the rapid growth of highperformance computing, have created exciting opportunities to take engineering simulation to new levels of scale, speed ...

Description: Product developers may see it as a perfect storm of challenges: increased product complexity, tighter quality requirements, and higher yield and productivity indexes. Even with such constraints, ...

Description: With engineering managers increasingly sensitive to the cost of product design, it is no longer enough to justify engineering software based on gut feelings about its value. Managers want to see cold, ...

Description: The term synchronous data is usually applied to vibration or acoustic data that is captured from an item of rotating equipment at regularly spaced angle intervals as distinct from regularly spaced ...

Description: When using vibration data, especially in conjunction with modelling systems, the measured data is often needed as an acceleration, as a velocity and as a displacement. Sometimes different analysis ...

Description: This article was inspired by a question asked by a reader regarding a previous article - Data Windows : What, why and when?. Specifically, the reader asked "Could you please put an example about ...

Description: Dennis Nadolsky has a lot on his shoulders. For several months the software guru has been, in essence, bringing into the 3-D CAD world some of the ideas that changed Diamond Heavy Haul from a ...

Description: In this article we will look at the basic steps behind a simple rotating machinery study. We won't look in great detail at some of the techniques involved - these are dealt with elsewhere on the Noise ...

Description: In general, noise or vibration signals are composed of one or more sinusoidal signals which can be quantified in terms of their magnitude (modulus) and phase components. These can be visualised as the ...

Description: Each of the different social networks has its own strengths and weaknesses in terms of how useful it will be in a work or educational environment. We will look at just a few of the different sites. ...

Description: From time to time I meet engineers who are interested in the conversions between acceleration, velocity and displacement. Often, they have measured acceleration, but are interested in displacement or ...

Description: From time to time I meet engineers who are interested in the conversions between acceleration, velocity and displacement. Often, they have measured acceleration, but are interested in displacement or ...

Description: DATS smoothing PROTOR runup vibration microphone Fourier aliasing P8000 strain gauge de-spike ENBW despike muffler gearbox strain gage engineering acoustic phaseless spikes Butterworth fatigue ...

Description: The use of a vibration condition monitoring system for monitoring vibration from large rotating machines fitted with fluid-filled journal bearings such as steam or gas turbines is well understood. ...

Description: An investigation was made of a sample of automotive components where some were exhibiting a high frequency "tick" or rattle during each operating cycle. This feature could be heard above the normal ...

Description: The new software release Solid Edge with Synchronous Technology 2 from Siemens PLM Software continues to deliver aftershocks to the PLM industry by introducing new uses of synchronous technology, the ...

Description: Between a rock and a hard place pretty much sums up the position of the Coilbox in a steel hot strip mill. Located between the roughing mill and finishing mill stages, Coilbox technology from Hatch ...

Description: Engineers are constantly faced with solving problems - it's what they're paid to do.The faster a formidable solution or the harder the problem, the more successful that person will become. Depending ...

Description: The Pocket Radar team set out to completely redesign the size and shape of traditional radar guns, opening a new market for a small, low-cost, accurate and convenient product. This required operation ...

Description: Many companies are now switching to 3D design systems to cut costs, improve quality and remain competitive.The popular Siemens PLM Software Evolve to 3D program provides four easy steps that help many ...

Description: With product complexity increasing, more and more companies realize that their current design technology is no longer able to cope. As product lifecycles decrease, engineering departments are ...

Description: Many companies already recognize the benefits of using 3D for design work. Solid Edge goes beyond building assemblies and allows companies to extend their CAD data to be used by design review teams, ...

Description: Globally distributed partner networks are no longer the sole domain of large OEMs. It is now common for small and mid-size companies to participate in or even drive multiple, highly competitive supply ...

Description: For some time now, the advanced assembly design capabilities of Solid Edge® software have been used by many companies such as VAI, Anglo Platinum and Krones to layout their factory floors and ...

Description: If your company designs sheet metal parts, it faces a series of unique challenges. Although parts are typically designed in their "formed" state, they begin as a flat plate. As a result, ...

Description: Solid Edge Structural Frames is a process-specific workflow that helps users develop rigid frame structures. An intuitive interface guides a user through the process of creating a 3D sketch of the ...

Description: In April, 2008 I had the unique privilege of visiting Solid Edge headquarters in Huntsville, Alabama to view one of the first external presentations of the new version of Solid Edge using synchronous ...

Description: This white paper presents just a sample of the many technical and commercial reasons for investing in Femap with NX Nastran that clearly show why Femap with NX Nastran is the leader for CAE products ...

Description: Schätti AG metalwork was founded 1934. It is a familyowned Swiss company where the third generation is now in charge: brothers Jos Schätti, Thomas Schätti and Stefan Schätti. The company, which has ...

Description: Industrial Control Associates, Inc. (ICA) is a systems integrator and machine builder specializing in programmable logic control (PLC) system machines. The company provides custom fabricated machinery ...

Description: In the market for more than 40 years, competing against multinational enterprises, Esmaltec stands out today as the only consumer products company with 100 percent Brazilian capitalization. Esmaltec ...

Description: Everdigm produces a wide range of construction machinery as well as equipment for fighting fires and responding to other natural disasters. The company began in 1994 trading second-hand construction ...

Description: Integrated DNA Technologies (IDT) is the largest supplier of custom nucleic acids in the United States, serving academic, government and commercial researchers in biotechnology, clinical diagnostics ...

Description: Wristwatches from IWC Schaffhausen do more than tell the time. These handcrafted and technically sophisticated luxury timepieces are a man's best jewelry piece and can become sought-after collector's ...

Description: Company realizes 20 percent faster design turnaround, 15 percent gain in employee productivity and 25 percent improvement in product reliability and quality KC Samyang Water Systems specializes in ...

Description: For more than 20 years, engineers and scientists have used NI LabVIEW to interface with measurement and control devices. LabVIEW integrates seamlessly with thousands of different hardware devices, and ...

Description: NI LabVIEW can run on most common OSs and deploy code to an array of hardware targets. This flexibility means you can choose the most appropriate computing platform, protecting your investment in the ...

Description: For more than 20 years, NI LabVIEW has been used by millions of engineers and scientists to develop sophisticated test, measurement, and control applications. While LabVIEW provides a variety of ...

Description: These days most people collecting engineering and scientific data digitally have heard of and know of the implications of the sample rate and the highest observable frequency in order to avoid ...

Description: For various reasons data captured in the real world often contains spikes that will give erroneous results when analyzed. DATS for Windows provides various ways of editing and removing these ...

Description: The Articulation Index or AI gives a measure of the intelligibility of hearing speech in a given noise environment. The metric was originally developed in 1949 in order to give a single value that ...

Description: In many instances we need to filter a signal to remove unwanted frequencies. If we use classical filters such as Butterworth, Chebyshev or even Bessel then a phase delay is introduced. This phase ...

Description: A common requirement in noise and vibration analysis is to find the overall level of a signal as a function of time. Now the overall level is a measure of the total dynamic energy in the signal. That ...

Description: In many cases only significant events, such as bumps or other transients in a signal are of relevance. The objective is to be able to isolate these events in a meaningful manner so that they may be ...

Description: The following application note shows the steps taken to perform a structural analysis on an automotive exhaust pipe (muffler) structure with the aim of improving the structural damping properties of ...

Description: Using Prosig's P8000 series data acquisition system with DATS signal analysis software, torsional analysis (crank jitter) was performed on an automotive engine attached to an engine dynamometer. The ...

Description: Order cuts are taken from a set of FFTs, each one at a different rpm. The rms level is then found as the Square root of the Sum of the squares of each of the FFT values. ...

Description: By combining a speed signal with a data signal and using the Short Time FFT algorithm (Hopping FFT), it is possible to extract order data directly as a function of time (Orders from Hopping FFT) ...

Description: Ever been lying on the beach and begun to wonder about the state of your LP turbines. Or out on business and anxious to know if that troublesome exciter bearing has settled down? Well with a Prosig ...

Description: In technical terms, resonance is the tendency of a structure or material to oscillate at maximum amplitude at a certain frequency. This frequency is known as the structure's resonant frequency. ...

Description: Standards DIN 4150-2:1999-06 and DIN 45669-1:1995-06 provide a means of assessing the effect on human beings of vibration caused by vehicle traffic, trains both above and below ground, construction ...

Description: This article will attempt to explain the basic theory of the frequency response function. This basic theory will then be used to calculate the frequency response function between two points on a ...

Description: In this article we will look at why we need to consider energy correction when producing frequency spectra and how we go about it. We will use a perfect, 'special case' signal to keep the explanation ...

Description: Any vibration signal may be analyzed into amplitude and phase as a function of frequency. The phase represents fifty percent of the information so it is most important to measure phase for vibration ...

Description: It is quite straightforward to apply "classical" integration techniques to calculate either a velocity time history from an acceleration time history or the corresponding displacement time history ...

Description: This application note describes the test and measurement process for the fatigue testing and development cycle of a component. ...

Description: These are two different techniques aimed at different objectives. ...

Description: Shaft displacement is an important vibration measurement for rotating machines. Shaft displacement is usually monitored by non-contact shaft displacement probes such as eddy-current probes. These ...

Description: The requirement was to develop a 'standard' test for assessing the sound quality of power steering pumps in vehicles. Measurements needed to be objective so that the method would be suitable for ...

Description: Torsional vibration is of key importance in the area of vehicle development and refinement. The main contributory source is the engine where periodically occurring combustion cycles cause variation in ...