nCode GlyphWorks Product Options
nCode GlyphWorks is a powerful data processing system for engineering test data analysis, with specific application to durability and fatigue analysis.
The basic GlyphWorks package is GlyphWorks Fundamentals. Users can add on to GlyphWorks Fundamentals from an ever growing list of analysis functions to increase product durability and performance.
GlyphWorks Fundamentals provides visualization and basic manipulation, frequency spectrum analysis and filtering capability. Report layouts can be interactively designed and these reports automatically generated by including as part of the analysis process. GlyphWorks fundamentals is a pre-requisite for all other product options.
The Fundamentals package includes support for a wide range of data formats and types of displays. This option contains the Super glyph to encapsulate multiple analysis functions as a single glyph that can be saved and re-used.
- Input multiple formats
- Channel calculator
- Channel reassignment
- Extraction and concentration
- Statistics and running statistics
- Unit conversion
- Frequency analysis
- Time at level analysis
- Rainflow counting
- Graphical editor
- Visualization and reporting
- Output multiple formats
- Batch and interactive interfaces
- Super Glyph encapsulation
- ScheduleCreate durability duty cycle definition
The Signal option delivers additional signal analysis capability and is particularly well-suited to durability test applications.. It also provides a set of glyphs to detect ‘features’ within time series data. These glyphs are powerful tools used to find problems within data such as spikes, drift and flat-lines. These features within the data can then be viewed and corrected automatically using other glyphs such as the Graphical Editing glyph.
- Level crossing counting
- Joint distribution analysis
- Peak valley slice
- PSD to rainflow cycle counting
- Trend removal
- Markov counting
- Relative damage calculation
- Flat-line detection
- Drift and spike detection
- Frequency-banded relative damage spectrum
- Rainflow exploration
GlyphWorks provides the industry-leading fatigue analysis technology you need to calculate fatigue life from measured data. You can correct for mean stress and surface finish effects, even back calculate from each data channel to determine a scale or fatigue concentration factor required to achieve a target life. You can then review damage histograms to determine which load cycles were most damaging, even output damage time histories to show exactly when the damage occurred. A database with commonly used fatigue data is also provided.
- Stress-Life method uses a nominal stress approach for high-cycle conditions or non-metallic applications.
- Strain-Life method is more appropriate for more severe loading conditions (low-cycle fatigue) – where plasticity is significant.
- Creep Analysis - performs creep calculation for time in hours to rupture. Supports Larson-Miller and Chaboche methods.
- Crack Growth provides linear elastic fracture mechanics in the GlyphWorks environment.
Crack Growth provides a complete fracture mechanics capability using industry standard methodologies, an open environment for users to embed their own algorithms – and the advanced reporting and quality assurance capabilities of GlyphWorks. Built-in growth laws include NASGRO3, Forman, Paris, Walker and more.
Crack Growth provides both backward compatibility with your legacy in-house solutions, along with a future-proof development tool for implementing new methodologies. The package effectively masks its high technology architecture behind a state-of-the-art graphical user interface that offers an intuitive and elegant view of the analysis along with full reporting facilities. Predicting how a crack will propagate after initiation is now easy.
A Practical Discussion on Fatigue
Performing durability tests, such as vehicle road simulators, can take many weeks and require huge amounts of time history data. Fatigue Editing is an option used to perform damage sensitive editing to generate shorter time series data that retain the required damage.
- Shorten multi-axial durability tests while retaining damage to save time and money
- Assess the trade-off between time saved and damage retained across multiple channels
A highly flexible tool, Fatigue Editing uses the powerful Fatigue glyphs enabling the user complete control over the parameters used in the damage calculations.
Accelerated Testing provides the ability to create a representative PSD or swept sine shaker vibration test based on measured data. It uses the fatigue damage spectrum approach as described in NATO STANAG 4370 (AECTP-240)/ UK DefStan 00-35/Mil-Std-810G, allowing users to tailor vibration tests to a target vibration environment. With Accelerated Testing, users can also compare existing test evidence against the requirements of a known test specification, enabling assessment of whether components in service will likely survive to the target service life. This known safety margin may help extend the life of parts in service or conversely avoid unexpected failures.
- Create an accelerated shaker test and assess the impact on shock and fatigue damage
- Rapidly compare an existing test specification with service vibration data
- Extend the life of parts in-service or avoid unexpected failures
- Understand the impact of exposure time in-service and on the test rig
GlyphWorks Accelerated Testing is the only known supported commercial software that makes it possible to quantify the fatigue damage of a vibration test.
Physical durability testing often requires determination of the optimum, most efficient mix of events required to match an overall target. Optimized Testing provides a proven approach to find the optimum solution across many channel locations.
- Significantly reduce proving ground track usage
- Optimize testing schedules and reduce testing time
- Understand how real world usage compares to track data
- Rapidly compare different proving grounds or duty cycles
A wide range of inputs from measured data such as rainflow cycle counts or relative damage values enables many industry applications. The optimization methods for best fit least-squares regression and constrained minimization routines employ robust algorithms from IMSL® Numerical Library.
The Frequency option provides a powerful, simple to use range of noise and vibration analysis capability with particular application to rotating machinery, octave analysis and frequency response. Specific functionality is also provided to assess vehicle ride quality analysis to ISO 2631 Whole Body Vibration standard and hand-arm vibration assessment to ISO 5349 standard.
- Frequency response for gain, phase and coherence of linear systems
- Joint time frequency
- Octave analysis in accordance with ANSI S1.11-2004
- Spectrum weighting
- Order tracking filter
- Waterfall analysis for rotating machinery
- Waterfall display including cursor slicing
- Auto/Cross correlation
- Custom Fourier filter for user defined filter definition
- Weighting filters including A, B, C noise filters and human body vibration in accordance with ISO 2631, ISO 5349
- Hilbert Transform
GPS Display glyph plots latitude and longitude GPS data on a map or grid background. Data can be also exported to Google KML file to enable easy viewing in Google Maps or Google Earth. The embedded mapping capability in the GPS Display glyph requires Microsoft® MapPoint® 2006 or 2009 to be installed. The GPS Display also supports feature lists allowing locations of interest on the data lines to be automatically identified and marked. For example, show where speed or temperature exceeded a certain value directly on the map. Regions for editing data can be defined based on geographical location.
GPS Processing enables vehicle performance data to be estimated from low sample rate GPS data. Calculated channels include speed, percent gradient, yaw rate and, lateral acceleration. It can even be used to estimate engine power and braking power.
Media Display glyph enables video and audio signals to be played using Windows Media® player embedded in the glyph. It also enables cursor synchronization with other data displays to gain insight on what was occurring in other signals. The Gauge Display glyph enables synchronized values to be displayed during playback in a variety of styles such as angular gauges or digital read-outs.
Search and select data from your ASAM ODS database from within GlyphWorks! The interface to the ASAM ODS data enables interactive browsing, editing of metadata and searching based on metadata all from within GlyphWorks. ASAM ATF and ATFX files are also supported and can be both imported and exported from GlyphWorks.
IMSL Statistics includes a Curve Fitting glyph for linear regression, polynomial regression up to 9th order and spline fitting and a Weibull Analysis glyph. These glyphs uses statistical routines of the IMSL® C Numerical Library. These mathematics and statistics functions can also be accessed using Python programming in the Scripting glyph (see GlyphBuilder option) using the special Python-enabled PyIMSL™ which is also distributed with GlyphWorks.
(IMSL is a registered trademark of Visual Numerics, Inc in the U.S. and other countries).
GlyphBuilder combines both Scripting glyph and Open glyph capabilities, enabling users to add their own unique or proprietary methods and file formats to GlyphWorks. The Scripting glyph enables new functionality to be added to GlyphWorks by using MATLAB or Python programming language (can be downloaded at www.python.org). With GlyphBuilder, users have the power to literally write their own glyphs!
Open Glyph directly enables external applications to be accessed from within a GlyphWorks process. The Open Glyph executes a given command line operation and in this way external code or scripts such as Visual Basic, Java, nCL, C++ etc., can all be called using data from the GlyphWorks process.