ESi has assisted clients in many different industries with the full range of technical support services—from design review and assessment to failure investigation and analysis.
Our multidisciplinary team of engineers and technicians performs a comprehensive assessment and provides pragmatic, effective recommendations for mitigating risks, redesigning procedures, and remediating deficiencies and failures in systems, structures, or equipment.
Delivering tailored solutions with data-driven insights.
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Multi-Discipline Approach to Investigation of Hail Damage to Metal Roofs with a Cosmetic Damage Endorsement
This matter involved a dispute over an insurance claim for hail damage to several low sloped commercial metal roofs.
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Mid-Air Collision in Uncontrolled Airspace
An ESi visualization helps investigators uncover which pilot was at fault in an investigation where there were no witnesses to the accident.
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Bunk Bed Child Entrapment Safety Analysis
On May 22, 2018, a two-year-old boy became trapped between the bunk bed upper bunk and the top rung of the ladder at his residence in Ohio.
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Motorcyclist Wouldn’t Have Crashed If He Hadn’t Been Speeding
Contrary to the motorcyclist’s testimony, reconstruction of the crash showed that the motorcycle was traveling 20-29 mph over the posted speed limit when the crash occurred.
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Stab to the Back: Self-Defense or Murder
ESi performs a biomechanical analysis and reenactment of an altercation between two men to help resolve conflicting accounts of how one of the men was killed. This analysis was used to support a not-guilty verdict for the murder charges brought against the defendant.
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Injury Causation Analysis of a Physical Altercation Resulting in Paraplegia Leads to a Favorable Verdict
An investigation of injury mechanisms of the neck, crash test dummy utilization and subsequent injury causation analysis, results in a favorable verdict for a gentleman paralyzed after a physical altercation outside a filling station.
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Major Pipe Recall: Engineering Analysis of Production Data Justifies Replacement
In a major recall of installed pipes in a Middle East gas field, an ESi statistical analysis supported the initial premise that a large proportion of pipes failed to meet the technical specifications.
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Metallurgical Evaluation from a Referee Standpoint
An investigation was performed to identify the root cause of “stardust” defects on a plated firearm, to determine their nature, location, and provide corrective actions.
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Spinal Fusion Bone Mill Analysis
Metal fragments were found in the milled bone used for spinal fusion surgeries.
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Structural Evaluation and Repair of Hurricane Damage
Technically accurate, fast, and comprehensive support of CAT claims is essential for insurance carriers maintaining good relationships with their insured.
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Barge Mounted Critical Lift Plan and Barge Retrofit
In a challenging and technically diverse project, ESi and our partner Oceanus provided engineering and marine survey support for crane barge operations.
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Emergency Shoring in Support of a Fire Origin & Cause Analysis
Technically accurate, fast, and comprehensive structural engineering services allowed the fire origin and case investigation to move forward, and the client to retain all of their options for the subsequent dispute resolution.
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Home Elevator Accident Investigation
On February 1, 2017, a two-year-old boy became trapped between the elevator accordion door and the elevator shaft (hoistway) door of a home in Little Rock, Arkansas.
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Automotive Equipment Accident Reconstruction & Testing
ESi was asked to perform analysis regarding a vehicle support collapse.
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Getting Cold Feet – Frost Heave of a Refrigerated Warehouse Floor
Investigation and analysis by ESi resulted in a favorable verdict at trial for the owner of a refrigerated warehouse following a frost heave failure of the warehouse floor.
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Frozen in Time: Understanding the Mechanics of a Cryogenic Loss
A liquid nitrogen cryogenic freezer failed due to a defect in the electronics and specimens were lost due to operator error and a failure to properly follow procedures.
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Butane Stove and Cannister Analysis and Investigation
ESi performed an investigation into an explosion/flash fire that occurred during the use of a portable cookstove that caused injuries to several people.
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The Biomechanical Evaluation of a Top Loader Tip-Over Incident
When a top loader with its load in the fully elevated position tipped over, the operator claimed that he had sustained traumatic injuries.
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Gas Grill Plastic Nut Failure
ESi conducts complex multidisciplinary product analysis to determine the root cause of a failure leading to the ignition of a fire.
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Bicycle Rider Pitch-over Analysis and Testing Refute Opposing Hypothesis
ESi was engaged to evaluate an alleged pitch-over bicycle accident that occurred on a city street.
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Aftermarket Wheel Bearing Case Settles in Favor of Plaintiff
A replacement wheel bearing with significant design differences from the original equipment manufacturer fails and causes permanent injury.
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Investigation of a Failed Railcar Wheel: Corrosion Pitting Fatigue
ESi investigated the root cause of a failed railroad wheel and determined that the reason for the failure was environmental rather than a result of human error.
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Ignition Source Viability: A Firework Story
ESi conducted a “ladder-sequence” of multiple tests, instead of one test with a variety of variables, resulting in a systematic, repeatable method to demonstrate the BC401 bottle rocket was a viable ignition source of rooftop debris and roofing material.
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ESi Testimony Supports State Appeals Panel Reversal of a $45 Million Oil Pipeline Verdict
ESi performs a complex standard of care investigation of an oil pipeline leak located in an urban high consequence area.
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Post-Fire Structural Integrity Evaluation of an Aircraft Utilizing ASTM E1004-02
Utilizing fire-damaged components as well as virgin aluminum alloy 2024-T3, ESi developed a clear correlation between electrical conductivity and mechanical properties of damaged and as-specified material.
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Gear Failure in a Marine Sterndrive Unit – Single Event or Wear and Tear?
ESi was requested to determine the cause of a gear train failure in a marine sterndrive unit.
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Firearm Investigation Determines Incorrect Powder in the Ammunition Was the Cause of an Explosion
An ESi investigation combines metallurgical, mechanical and chemical analysis to determine the cause of a rifle accident.
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Getting to the Bottom of a High-Rise Water Leak
ESi was hired to investigate the cause of failure of a condominium apartment’s water-source heat pump heating and air conditioning unit.
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Severe, Localized Waterside Corrosion to Boiler Tubes
ESi was requested to determine the cause of corrosion perforations that occurred to carbon steel tubes in a customer’s steam boiler.
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When Cleaning Makes a Mess
Using a combination of chemical and metallurgical principles, ESi determined that stainless steel kitchen components could be restored to their pristine state, following staining damage from acid exposure, eliminating need to purchase all new equipment.
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Failure to Deploy Aircraft Ice Prevention System Results in Deadly Crash
An ESi report finds that the airplane accident was due to failure to activate the ice protection system on final approach for landing.
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Die Cast Aluminum Backing Plate Crack Evaluation
A client provides equipment used for maintaining railroad rails.
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Meticulous Metallography Helps Crack the Case
Shortly after take-off, a single engine turbo prop utility aircraft experienced a loss of engine power.
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Jet Fighter Acrylic Canopy Failure
The results of ESi’s investigation were used to recommend and substantiate to the USAF Technical Airworthiness Authority (TAA) a return to pressurized flight without altitude restrictions.
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Failure Sequence Determination of Industrial Machinery
An industrial client experienced an early-in-life (less than two million cycles) failure of newly designed, automated machinery used in the food packaging industry.
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Analysis of ECM Data Showed Truck Driver Properly Maneuvered on an Icy Roadway
A truck driver lost control of his tractor-trailer on an undivided, multi-lane highway after unexpectedly encountering black ice while descending a grade at night.
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The Little Plane That Could: Failure Analysis of a Robust Turbine Engine
ESi investigated an issue involving the performance of the high temperature superalloy used in the turbine blades of a commercial aircraft engine.
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Train Conductor Fall from Tank Car
A train conductor was working in a rail yard as part of a switching crew.
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Shipboard Generator Failure after Rewind
ESi was able to review and completely refute the validity of plaintiff and co-defendant testing and claims that our client’s product was defective, pointing out their errors in testing, interpreting results, their misunderstanding of and misapplying key electrical principles, and what appeared to be a separate focused agenda designed to place blame only on our client.
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Composite Railroad Tie Evaluation Study
ESi has been performing field and physical testing of composite railroad ties to refine industry specifications on mechanical and thermal performance.
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Alleged Hand Crushing Injury at Grocery Store
ESi conducted a site inspection at a grocery store’s bottle return area and compared force and speed measurements of a swinging door with published literature to determine that the incident in question would not have happened in the manner described, ultimately resulting in a favorable settlement for ESi’s client.
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Source of Damage Determined for Gas Turbine Engines
An ESi investigation proving manufacturer defect prior to transport damage results in a reduced claim settlement for the client.
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Powerplant Suffers Extended Downtimes & Receives Favorable Settlement As Force Majeures
Two landfill gas process equipment failures at an electric powerplant cause significant unplanned downtimes and substantial repair procedures.
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Slip And Fall Mishap At A Wedding Reception
An ESi investigation results in a quick settlement following testing and an engineering analysis of the biomechanics and human factors surrounding a slip and fall incident in a ballroom during a wedding reception.
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Pipe Bomb Mailings Net 20-Year Conviction
In late October 2018, the U.S. Postal Service intercepted 16 packages mailed to prominent individuals and politicians.
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Dust and Hydrogen Explosions
ESi identified ignition sources and hazardous conditions after fatal plant fires, prompting safety audits and corrective actions companywide
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Petroleum Tank Explosion
Investigating a tank explosion after incomplete gas-freeing left flammable methane
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Natural Gas Transmission Pipeline Failure
ESi investigated a fatal San Bruno pipeline rupture, and determined that automatic valves wouldn't have prevented the initial deadly fireball
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Explosion Rockets Delivery Truck
An ESi investigation determines the cause of a delivery truck’s mechanical explosion that shot a compressed natural gas container rocketing through the air.
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Pedestrian Injury Resulting from Standing in the Foul of a Commuter Train
A pedestrian waiting for a southbound train on Track 1 walked through an opening in the guardrail surrounding a ground-level platform and into the "foul" of Track 2, defined as the four-foot-wide area on either side of the track that the train occupies as it passes through the area.
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Accident Reconstruction and Biomechanical Analysis
Two vehicles collided at an intersection, causing one vehicle to flip onto its side.
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PVC Pipe Failure
A polyvinyl chloride (PVC) pipe failure occurred during the winter.
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Building Envelope Consulting and Water Intrusion Testing
Three separate architects were used to design three separate educational buildings on a large community college campus in Omaha, NE.
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Minivan Collides with Train
A minivan was crossing a set of multiple railroad tracks after a train had backed across the crossing on the near track and was subsequently struck by a through train traveling in the opposite direction on the far track.
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Small Aircraft Crashes into House
A small aircraft departed for a practice flight in instrument flying conditions.
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Safety Analysis of Cable Sleeve
ESi was retained by the manufacturer of personal fall protection equipment to perform a safety analysis and documented risk assessment of a newly designed detachable cable sleeve.
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Fall from A Rail Station Platform
A railroad worker claimed injury while on the job.
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Pre-Impact Motion Analysis
ESi was retained to evaluate the circumstances around an accident involving a light pickup truck and a tractor semitrailer combination.
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Fall from a Multi-Story Building
A woman attending an event at a hotel went over a railing on a spiral staircase, resulting in a three-story fatal fall to the basement.
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Explosion at Fertilizer Distribution Facility
In West Texas, a fire broke out in a wood-frame building where fertilizer sold to local farmers was stored.
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Automotive Accident Reconstruction
This project involved a passenger car stopped in the roadway, while a garbage truck allegedly backed into the front of the vehicle
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Miller Park Crane Collapse
In order to construct the retractable roof for the Miller Park baseball stadium in Milwaukee, Wisconsin, a large, heavy-lift crane was required.
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UAL Flight 232
On July 19, 1989, United Air Lines Flight 232, a McDonnell Douglas DC-10 in route from Denver, CO to Chicago, IL, with 285 passengers and 11 crew members aboard, suffered an uncontained failure of the Stage 1 fan disk in its Number 2 engine.
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Hand Fed Chipper Winch Line Accident
Biomechanical accident reconstruction analysis methodologies were used to address injury modes associated with human operator involvement with a commercial hand fed tree chipper
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Sliding Door Sensor Safety Analysis
A female pedestrian wearing black clothing was injured when an automatic sliding door closed on her while she was standing at the right door threshold.
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Estate of Kang vs. Iowa Mold Tooling
A mechanic in a shop that builds MOW specialty vehicles was lifting an articulating crane to mount it on a truck bed when the sling failed.
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Analysis Reveals Driver Never Applied Brakes
Crash data retrieved from the van’s Powertrain Control Module, when analyzed with scene scan data and evidence, refuted Plaintiff’s sworn testimony regarding her actions leading up to the crash and led to the court granting Defendant’s Motion for Summary Judgement and dismissing Plaintiff’s Complaint
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Discover how ESi’s multidisciplinary experts clarify the complex through scientific investigation and forensic engineering. Our proven methodologies support legal, insurance, and industry professionals. Learn more about our comprehensive capabilities today.