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Welcome to Investigative Science & Engineering, Inc. (ISE)

Investigative Science and Engineering, Inc. (ISE) is a WBE/DBE certified firm providing scientific consulting services, R&D, and mission support to the engineering, legal, environmental, and science industries. We are one of only a handful of firms capable of solving highly complex engineering, environmental, and general forensic problems utilizing internal resources and talents. 

Our new website is currently under construction, so some features and menu items are not fully active. We're adding a lot of interesting and exciting content (without the use of any Flash components to be 100% browser compatible) and should hopefully have everything up and running by the end of January 2012.

What's New at ISE...

There's always something new going on at ISE. Here's some of the things we're currently working on...

The Science Forums are Officially Online...

The ISE Science Forums are officially up and running. To contribute to the site, please log in or create an account using the link below. We're interested in hearing your technical two-centsOur current topics are on the state of the National Aeronautics and Space Administration (NASA) and their future direction in today's world, and our personal favorite, Global Warming topics du jur. We have also created several general interest categories, so if you don't see anything interesting, feel free to create a new discussion topic.

IS3 4.0 Acoustical Model Licensing Available Soon ...

After years of refinement and use by ISE on our projects, we will be offering the IS3 acoustical model (Version 4.0) as a yearly licensed subscription service to our professional colleagues. We are in the process of making the user interface more 'pretty' since the core code was written for engineers, by engineers, with one goal in mind - get the job done. Subscription features will allow continuous upgrades to the code which will involve the addition of several advanced features in the works. Stay tuned...

Unsere Website ist in mehreren Sprachen verfügbar...

ISE is currently working on several multi language translations of our site which will be internal to our server. In the meantime, versions of our site are currently available in US English, French, German, Japanese, Russian, and Spanish using the Google Translate engine (although changes in page formatting occur). Page translations can be accessed using the small flag icons located on the top left of every page. Fully indexed searching of the site is now possible, but only in English.

Recent Events and Projects

ISE is always developing new and innovative technologies and solutions to assist our clients as well as our own research and development projects. Here's a small sampling of some of the recent things we've been up to over the past couple of months ...

  • Laser Optics Test Bench Development Complete

    ISE has completed work on our laser optics test bench. The focal point is our newly built Class IV 1W 655nm continuous wave laser capable of high levels of visible illumination and particle scatter in our laboratory research. 

    Our big scary laser, besides being used for holography experiments of various gas transition phases under examination in the lab and the detection of damage in specially and generally orthotropic composites, has the uncanny ability to burn through gloved hands, ignite dark objects, ruin digital cameras (if not properly positioned), heat water, and oh yes, blind you instantly. 

    Needless to say, an entire set of safety protocols and interlocks has been incorporated into the design to keep the experiments safe. The photo shows the effect of the laser being shined lengthwise through a simple glass prism.

     

  • Rubidium Atomic Time Standard Added to ISE Laboratory

    ISE has added a Stanford Research Systems Model CG635 in-house atomic clock to our physical sciences laboratory as a redundant calibration standard independent of other sources (actually allowing ISE's research lab to function as its own independent time and frequency benchmark for very long periods of time).

    Our atomic clock, which is the same type as those used in GPS navigation satellites, would be classified as a secondary frequency standard, which works through the measurement of electron transition in Rubidium-87 atoms.

    It's long term stability is roughly 1x10-10 seconds, more than accurate for our needs. It is periodically cross-checked against our LORAN-C standard which has an accuracy of 1x10-12 seconds.

    The photo is of the unit under normal operation.

     

     

  • Dynamic Stability Assessment of the Pleasureway Excel Motor Coach 

    Just how safe is the Class B RV Motorcoach you're driving in?  That's a question we recently answered for a client experiencing some stability problems with a particular vehicle.

    ISE recently performed a kinematic, kinetic, and operational dynamic assessment of a new Pleasureway Excel MMX Class B motorcoach which was experiencing some classical aerodynamic flutter (and subsequent stability loss) at highway speeds. Our testing came up with some interesting findings, which will be published online in the upcoming months.

    Stay tuned...


     

  • SRS 300 AMU Mass Spectrometer Added to Physical Science Laboratory

    ISE has again raised the bar to new levels by adding Mass Spectrometry to our list of in-house services. Our SRS UGA300 mass spectrometer allows our research staff to expand its investigative research capabilities down to the atomic level.

    With the ability to detect materials having weights up to 300 atomic mass units (AMU's), and rapidly compare test samples against 192,262 different chemical compounds using the NIST08 Mass Spectral Library, the use of mass spectrometry allows ISE to quantify with great accuracy test samples for heavier and more difficult to detect elements and compounds such as lead, mercury, arsenic, as well as radioactive isotopes.

    The photo shows a standard Tedlar bagged air sample being tested.

     

  • Lightmap Illumination Modeling Program Brighter than its Competitors

    The diffractive technology developed over the years within the IS3 model has also been revisited in our new Lightmap 3.0 program which provides foot-candle intensities across any surface.

    LightMap is an effective tool in identifying artificial and natural light distribution across an area of interest and is readily capable of capturing the smallest details of shadow and glare. The program need not be limited to just the visible spectrum of light (roughly 700 nm to 400 nm) and can in fact generate field patterns for any non-ionizing radiation source (i.e., wavelengths from 1 mm to approximately 750 nm – the boundary of the near infrared).

    The new LightMap 3.0 program was recoded with an eye towards massively parallel processing. The photo is a sample output (in horizontal foot-candles at 36-inches) for a large auto plaza project.

     

  • IS3 Model Tackles the Toughest Environmental Noise Problems

    The latest version of the ISE Industrial Source Model (IS3) is sure to make the competitors cringe. Version 3.9 touts some highly advanced features such as the ability to model complete internal reflection, multiple material attenuative sources, variable propagation rates and source types, and atmospheric scattering.

    In addition, a complete overhaul of the code was performed streamlining the computational task for the end user. Adaptation of the Apple XGRID technology is currently being examined as a variant to the IS3 program, since most internal tasks can be performed in a parallel fashion.

    Other firms merely talk about being able to do noise contouring; ISE is raising the bar by developing the technology and taking the visualization process to levels 'unheard of' before. Imagine what IS3 could do for your project...

     

  • R-Wave Seismic Blasting Prediction Model Hits another Milestone

    Our R-Wave ground vibration prediction model hit another milestone this year in development by being able to accurately predict surface freight and commuter rail motion to within an accuracy of one-foot. 

    For years, the model has been routinely able to handle multiple blasting sources with accuracy far greater than that predicted by the DuPont equation. Now, incorporating the eigenfunctions from years of modal analysis of different soil types has improved the accuracy of less-impactive sources.

    The photo is a sample output showing a high-confinement blast.



     

  • Non-Destructive Inspection (NDI) of Large Scale Composite Structures

    ISE is currently developing a robust method for the determination of structural defects within laminated composite aerospace structures. The current method under development uses a mathematically derived specially-orthotropic lamination model subjected to sensitivity perturbations from empirical dynamic transfer-function data.

    Predicted failure areas, precipitated by the loss of signal coherence between test points, are screened under a statistical failure model using the maximum strain energy (Beltrami) theory and maximum distortion energy (von Mises) theory as indicators of areas of delamination of plies, disbonding of joints, or void detection.

    The photo to the right shows one of the many tests being performed to quantify the extent of disbonding and delamination within an eight-ply woven composite panel specimen having a NASA ply configuration of [0/45/0/-45]S and an EA-956 resin.



     

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