Forensic Analyses Articles

  • New and updated forensic crime lab grant funding opportunities

    In case you missed it, the NIJ is hosting a webinar tomorrow (1:30pm EST) on grant funding opportunities for publicly funded crime laboratories. The topics include 2017 changes to traditional grant programs, like Coverdell, DNA CEBR, and research and Evaluation for the Testing and ...


    By Qualtrax Inc

  • Case study - Oklahoma crude oil forensic analysis

    An oil company used Sitelab’s laboratory to perform oil forensic analysis testing crude oils from different well sites to determine the percentage of oil content from two formations. The wells tap into these zones at different depths, thousands of feet below the ground. Knowing what type of oil being pumped is important. All six oil samples had similar GRO content, but the PAH content in ...


    By Sitelab Corporation

  • Case study - NAPL forensics analysis at tank farm in Boston

    Ambient Engineering, Inc. (Concord, MA) used Sitelab to investigate and remediate a former tank farm along Boston Harbor contaminated by a large, subsurface plume of commingled diesel fuel and No. 6 fuel oil. Loading racks (above) are suspected to have contributed to most of the site’s contamination. Light Non Aqueous Phase Liquids (LNAPL) collected from 40 monitoring wells were tested ...


    By Sitelab Corporation

  • A predictive approach of dynamic modulus for characterising Florida hot mix asphalt mixtures

    The dynamic modulus is one of the fundamental properties defining the response of asphalt mixtures in a flexible pavement system. It is an essential input of the Mechanistic–Empirical Pavement Design Guide (MEPDG) software for asphalt pavement design. Many studies have been done about the predictive model of dynamic modulus. This paper presents a comprehensive study about developing a predictive ...


    By Inderscience Publishers

  • Forensic evaluation of multiple cracking of a concrete test cell built over an open graded aggregate base

    In August 2011 a test cell of 6 inch thick concrete surfacing placed over of special open graded Limestone aggregate base predominantly 8 inches (203 mm) thick was constructed at the MnROAD research facility. The two layers overlaid an existing 6 inch (150 mm) of MnDOT non–drainable aggregate base that overlaid a clay/silt sub–grade. In July 2012, an extensive cracking pattern was observed. This ...


    By Inderscience Publishers

  • A rational approach for conducting highway pavement forensic investigations

    Forensic investigations of highway pavements are generally conducted to investigate premature failures, but there are other reasons for conducting them, such as understanding exceptional pavement performance. Although frequently conducted, research was needed to identify and evaluate current investigation practices, and to develop a rational process that considers relevant factors and provides a ...


    By Inderscience Publishers

  • Forensic engineering applied to the analysis of a gas explosion in a residential building

    Present paper deals with the identification of the cause of an explosion in a hollow space positioned below a residential building as the result of welding operations. On field investigation clearly demonstrated that the explosion was due to the ignition of a flammable atmosphere in the basement of the building. Along the trial two hypotheses were brought to the judge: (a) explosion of an ...


    By Inderscience Publishers

  • In response to O'Reilly et al. (2014)

    Coal‐tar‐based pavement sealant, a black liquid that is sprayed or painted on asphalt pavement, typically is 15 to 35% by weight coal tar or low‐ or high‐temperature coal‐tar pitch. USGS, other governmental, and academic research that has concluded that coal‐tar‐based pavement sealants are a major source of urban PAHs have relied on a wide array of forensic methods. Published academic and ...


    By John Wiley & Sons, Ltd.

  • Precellys application focus forensic - case study

    Forensic laboratories working with hard samples such as hair [1, 2J, bone [3], teeth, skin, etc. experience difficulties with DNA extraction due to the high energy needed to grind these tissues. Moreover, biological evidence is available in small quantities and the current techniques used do not provide high quality results. The Precellys homogenizers provides high speed sample disruption based ...


    By Bertin Instruments

  • Response to O'Reilly et al. (2014)

    Recently, O'Reilly et al. (2014) provided a review of environmental forensic techniques for source characterization and identification of pyrogenic polycyclic aromatic hydrocarbons (PAHs) in sediments. They also provided an example case study pertaining to refined tar‐based sealers [commonly known as coal tar‐based sealants (CT‐sealants)] to support their contention that CT‐sealants are not a ...


    By John Wiley & Sons, Ltd.

  • Minnesota I35W steel bridge collapse: lessons learned and challenges revealed

    This article discusses an independent investigation and associated forensic analysis of the old Minneapolis highway I35W Bridge that collapsed on 1 August 2007, which is based on a thorough examination of the original design drawings, a series of detailed 2D/3D finite elements computations of the bridge and the material evidences disclosed by National Safety Transportation Safety Board (NTSB) ...


    By Inderscience Publishers

  • Reconstruction of a go–karting fatality

    Concession go–karts are recreational hire–vehicles with a unique and challenging set of crashworthiness requirements. A case study reconstruction of a fatal crash involving a female rider, that occurred at a speed of 25 km/h on an 'in–door' circuit, has revealed a number of crashworthiness issues that need to be considered by both designers and operators. Details of the forensic investigation of ...


    By Inderscience Publishers

  • Forensic evaluation of a large reinforced concrete specimen using radar and ultrasonic pulse echo

    Non–destructive techniques play an important role in the condition assessment and evaluation of reinforced and pre–stressed concrete structures and also serve as a forensic tool in identifying various parameters such as thickness, presence of reinforcement, spacing, cover thickness, presence of other elements such as PVC pipes, steel embedment, honeycombs and voids. For exploring the ...


    By Inderscience Publishers

  • Forensic investigation of flexible pavements in Ohio

    This paper presents the results of a forensic investigation initiated by the Ohio Department of Transportation in 2006 to determine the reasons for differences in performance of flexible pavements in Ohio. Ten projects with average performance and ten projects with excellent performance were selected for study. Falling Weight Deflectometer and ride quality measurements were taken along all ...


    By Inderscience Publishers

  • Use of failure case studies in a construction management course

    Reasons for including failure case studies within the undergraduate engineering curriculum have been made by various authors, which has led to the inclusion of structural failure cases into some analysis and design courses. However, there is also a need for Civil Engineers to understand project management issues. This paper deals with the integration of failure case studies into a construction ...


    By Inderscience Publishers

  • Forensic engineering for machine foundations

    Machine foundations are dynamically loaded structures whose response depends on a number of parameters such as strength, stiffness, mass, damping, soil–structure interaction and fatigue. Performance–based designs and evaluation procedures are gaining popularity particularly with respect to structures that have been built using codal provisions existing a few decades back. Enhancement of knowledge ...


    By Inderscience Publishers

  • Considerations in forensic examination of automotive systems

    Automotive forensic examination is the systematical analyses of failed automotive components in the pursuit of and the identification of the cause(s) or root cause(s) of the physical damage or other disablement done to vehicle by collision. It comprises a combination of science, experience and some art by using the laws of physics, mathematics, engineering, etc. mixed with the expert's real–world ...


    By Inderscience Publishers

  • Experimental research on the differences in a driver's perception of objects from stationary and moving vehicles

    The presented measurements reflect research dedicated to the issue of identifying a pedestrian in ordinary road traffic from a moving vehicle. This research is important for clarifying and assessing serious traffic accidents involving collisions between vehicles and pedestrians. Since experts can only measure the distance at which one can see a pedestrian from a stationary or slow moving vehicle, ...


    By Inderscience Publishers

  • Environmental forensics investigation

    Location: Vancouver, BC Owner: Confidential Description: Environmental forensics investigation ongoing to determine the source of chlorinated solvents (PCE, TCE, 1,1,1-TCA1,1,DCE) and 1,2-dichlorobenzene contamination at a site that has changed owners in the past 25 years. Advanced Forensic Techniques used include hydrolysis equation for ...


    By NovaTec Consultants Inc.

  • The history of leaded gasoline

    Forensic investigations are often a combination of both scientific techniques and historical background studies. One example that is often used is the background to leaded gasoline. Gasoline service stations can be found on many street corners and, in fact, there were many more service stations in the United States in the 1960s than there are today. This means that potential sources of ...


    By Triassic Technology, Inc.

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