|Publication Year: 2016|
Highlight ID: 655
|Scientists Develop New Tool to Detect Internal Decay in Trees|
Through collaboration with an industrial partner, the Forest Service's Forest Products Laboratory helped develop a handheld tool to assist tree inspectors with detecting internal decay in standing tre ...
Highlight ID: 657
|Seismic Performance of Cross-Laminated Timber Buildings|
Cross-laminated timber (CLT) buildings are becoming popular in earthquake regions of the United States, but structural engineers need new design methods. Forest Service research is striving to develop ...
Highlight ID: 656
|Using New Technologies to Improve Log Defect Detection|
Scientists from the Forest Service's Forest Products Laboratory and Northern Research Station cooperated with West Virginia University to enhance the competitiveness of the U.S. hardwood lumber indust ...
|Publication Year: 2014|
Highlight ID: 583
|Assessment Manual for Timber Structures Helps Building Inspectors|
The Wood and Timber Condition Assessment Manual is an extremely valuable resource for wood design professionals. Forest Service scientists are leading experts in this field and are the "go-to source" ...
Highlight ID: 586
|Inspection Protocols Help Preserve Ancient Chinese Structures|
Forest Service scientists worked with Chinese scientists and engineers to develop inspection procedures to aid in the preservation and restoration of historically significant wood structures. ...
|Publication Year: 2013|
Highlight ID: 433
|Keeping America's Historic Covered Bridges Safe for Vehicular Traffic|
The Forest Products Laboratory, in partnership with the Federal Highway Administration and the National Park Service is sponsoring a comprehensive research program on Historic Covered Timber Bridges i ...
Highlight ID: 436
|New Acoustic Technology Evaluates Wood Quality of Standing Trees|
Lack of techniques to assess the quality of standing trees results in inefficient allocation of timber resources and also limits the ability of forest managers to grow high-quality wood with appropria ...
Highlight ID: 434
|Scientists Study True Longevity of Timber Highway Bridges|
Do timber bridges last longer than concrete or steel bridges in similar climates This national project aims to generate more reliable data about the true longevity of timber bridges in the U.S. and al ...
Highlight ID: 440
|Traditional Grading System Updated for Structural Lumber|
The Forest Products Laboratory has traditionally provided unbiased information on the properties, characteristics, design, and use of structural wood products to groups and agencies that develop or co ...
Highlight ID: 439
|Wood Construction Goes Beyond Its Traditional Roots|
As interest in sustainable building options continues to grow. Wood construction is going beyond its traditional roots in housing and expanding into mid-rise, high-rise, and non-residential applicatio ...
|Publication Year: 2012|
Highlight ID: 25
|America's Iconic Covered Bridges Documented With As Built Records|
Laser scanning technology provides details of historic covered timber bridges ...
Highlight ID: 23
|Making the Most of Beetle-Killed Trees|
New manual gives land managers a variety of options for beetle-killed trees ...
|Publication Year: 2011|
Highlight ID: 284
|America's Historic Covered Timber Bridges|
Covered wooden bridges proliferated in the United States in the mid-nineteenth century. Today an estimated 800 covered bridge structures remain as cherished links to the technological heritage of the ...
Highlight ID: 279
|Develop thermal verification guidelines for firewood heat treatment|
To stop further spread of the Emerald Ash Borer (EAB), the USDA Animal and Plant Health Inspection Service (APHIS) has enforced a heat treatment process for the U.S. firewood industry to heat steriliz ...
Highlight ID: 282
|Heat treating wooden ammunition pallets for invasive species|
Wood pallets serve as support for munitions loads and other military supplies transported within the continental U.S. and internationally. Despite this integral transport function, wood pallets have b ...
|Publication Year: 2010|
Highlight ID: 170
|Centennial Edition, Wood Handbook—Wood as an Engineering Material|
The Wood Handbook—Wood as an Engineering Material serves as a primary reference document for a wide variety of users-from the general public through architects and design engineers who use wood ...
Highlight ID: 185
|Heat Sterilization of Firewood for Thermal Eradication of Emerald Ash Borer|
FPL researchers have led a joint research effort with USDA APHIS and state regulatory staff to evaluate various heat treatment options and heating times for ash firewood and help firewood industry to ...
view profile »
|Program Support Assistant||608-231-9352|
Falk, Robert H.
view profile »
|Research General Engineer||608-231-9255|
Rammer, Douglas R.
view profile »
|Research General Engineer||608-231-9266|
Ross, Robert J.
view profile »
|Supervisory Research Gen. Engineer||608-231-9221|
Senalik, Christopher Adam
view profile »
|Research General Engineer||608-231-9309|
Wacker, James P.
view profile »
|Research General Engineer||608-231-9224|
view profile »
|Forest Products Technologist||608-231-9461|
view profile »
|Below are the 50 most recent products author or co-authored by researchers of this unit that have been posted, sorted by publication year and title. To access the complete repository of FPL products, click here.|
|Publication Year||Title||Date Posted|
|2018||A fit of a mixture of bivariate normals to lumber stiffness—strength data||09/21/18|
|2018||Ability of finger-jointed lumber to maintain load at elevated temperatures||04/10/18|
|2018||Advanced signal analysis technologies to improve automated lumber grading technologies||05/14/18|
|2018||Defect detection and quality assessment of hardwood logs: part 1—acoustic impact test and wavelet analysis||08/14/18|
|2018||Defect detection and quality assessment of hardwood logs: part 2—combined acoustic and laser scanning system||08/14/18|
|2018||Design values for domestic wood species used in stairway construction||05/14/18|
|2018||Development of seismic performance factors for cross-laminated timber shear walls||04/19/18|
|2018||Distributions of MOE and MOR in a full lumber population||09/27/18|
|2018||Effect of site characteristics on juvenile wood transition in lodgepole pine in the inland northwest||07/24/18|
|2018||Engineering performance characteristics of hardwood cross-laminated timber||05/22/18|
|2018||Evaluating the use of drones for timber bridge inspection||09/20/18|
|2018||Evaluation of creep performance of structural insulated panels (SIPs): phase 2||09/28/18|
|2018||Extended plate and beam demonstration home||02/14/18|
|2018||Improving Log Defect Detection Accuracy by Combining Complementary Scanning Methods *||01/02/18|
|2018||Industry-prioritized research, technology transfer, and education needs and opportunities in residential construction||07/27/18|
|2018||Lateral load performance of SIP walls with full bearing||02/14/18|
|2018||Performance of wood adhesive for cross laminated timber under elevated temperatures||09/28/18|
|2018||Residential tornado safe room from commodity wood products – design and development||03/19/18|
|2018||Residential tornado safe room from commodity wood products – impact and wind pressure testing||03/19/18|
|2018||Statistical investigation of modulus of elasticity and modulus of rupture distributions in mill run southern pine lumber||04/23/18|
|2018||Using transverse vibration nondestructive testing techniques to estimate stiffness and strength of southern pine lumber||08/14/18|
|2018||Wear behavior of drill bits in wood drilling resistance measurements||08/14/18|
|2017||A critical analysis of methods for rapid and nondestructive determination of wood density in standing trees||06/28/17|
|2017||Accelerated aging of preservative-treated structural plywood||09/05/17|
|2017||Acoustic impact testing and waveform analysis for damage detection in glued laminated timber||10/05/17|
|2017||Assessing ability of ground-penetrating radar to detect internal moisture and fungal decay in Douglas-fir beams||09/21/18|
|2017||Assessing specific gravity of young Eucalyptus plantation trees using a resistance drilling technique||06/28/17|
|2017||Blast-resistant testing for loaded mass timber structures||09/05/17|
|2017||Bonding mixed species for advanced biomaterials||08/01/17|
|2017||Codes and standards activities at the USDA Forest Service, Forest Products Laboratory||02/01/17|
|2017||Combining acoustic and laser scanning methods to improve hardwood log segregation||09/21/18|
|2017||Comparative durability of timber bridges in the USA||10/06/17|
|2017||Comparison of nondestructive testing methods for evaluating No. 2 Southern Pine lumber: Part B, modulus of rupture||06/21/17|
|2017||Development of heavy timber buckling-restrained braced frames||04/10/17|
|2017||Effect of multiple knots in close proximity on southern pine lumber properties||02/01/17|
|2017||Effect of silvicultural practices on the physical and mechanical properties of lake states hardwoods||06/15/17|
|2017||Energy harvesting from wood floor vibration using a piezoelectric generator||06/30/17|
|2017||Evaluation of bridge components salvaged from historic Route 66 in California||08/01/17|
|2017||Evaluation of remotely piloted aircraft systems as a bridge inspection tool||02/01/17|
|2017||Experimental and theoretical modal analysis of full-sized wood composite panels supported on four nodes||10/05/17|
|2017||Investigation of early timber–concrete composite bridges in the United States||10/06/17|
|2017||Mass timber rocking panel retrofit of a four-story soft-story building with full-scale shake table validation||09/14/17|
|2017||Measuring wood quality in standing trees--a review||01/25/18|
|2017||Multivariate modeling of acoustomechanical response of 14-year-old suppressed loblolly pine (Pinus taeda) to variation in wood chemistry, microfibril angle and density||06/28/17|
|2017||New technologies for ensuring best use of salvaged beetle-killed trees||02/01/17|
|2017||Nondestructive assessment of wood members from a historic viewing tower||09/21/17|
|2017||Partial resistance drilling to assess wood density in trees||09/21/18|
|2017||Proceedings, 20th international nondestructive testing and evaluation of wood symposium||12/14/17|
|2017||Reminder about potentially serious problems with a type of blocked ANOVA analysis||09/05/17|
|2017||Simulations of solid lumber strength property monitoring tests||06/20/17|
|2017||Smart timber bridge on geosynthetic reinforced soil (GRS) abutments||10/06/17|
|2017||Statistical models for the distribution of modulus of elasticity and modulus of rupture in lumber with implications for reliability calculations||12/07/17|
|2016||(Eds.) Proceedings: Mass Timber Research Workshop 2015||03/16/16|
|2016||A finite element investigation of the relationship between bat taper geometry and bat durability||03/21/17|
|2016||An acoustics operations study for Loblolly pine (Pinus taeda) standing saw timber with different thinning history||09/16/16|
|2016||An Overview of CLT Research and Implementation in North America||09/07/16|
|2016||Assessing the Ability of Ground-Penetrating Radar to Detect Fungal Decay in Douglas-Fir Beams||05/24/16|
|2016||Chapter 02218: Wood Mechanical Fasteners||01/07/16|
|2016||Chapter 8 optimized test design for identification of the variation of elastic stiffness properties of Loblolly Pine (Pinus taeda) pith to bark||11/02/16|
|2016||Characterization of maple and ash material properties as a function of wood density for bat/ball impact modeling in LS-DYNA||03/20/17|
|2016||Determination of seismic performance factors for CLT shear wall systems||02/10/17|
|2016||Development of a ready-to-assemble (RTA) tornado safe room constructed from cross-laminated timber||09/19/16|
|2016||Development of a tornado safe room door from wood Products: door design and impact testing||09/26/16|
|2016||Effectiveness of Several NDE Technologies in Detecting Moisture Pockets and: Artificial Defects in Sawn Timber and Glulam||08/03/16|
|2016||Effects of cedar oil and silica gel treatment on dimensional stability and mechanical properties of Southern Yellow Pine boards||09/26/16|
|2016||Experimental seismic behavior of a full-scale four-story soft-story wood-frame building with retrofits I: building design, retrofit methodology, and numerical validation||10/05/17|
|2016||Experimental seismic behavior of a full-scale four-story soft-story wood-frame building with retrofits II: shake table test results||10/05/17|
|2016||Field testing and structural analysis of Burr arch covered bridges in Pennsylvania||09/26/16|
|2016||Hybrid system of unbonded post-tensioned CLT panels and light-frame wood shear walls||02/15/17|
|2016||JMFA3--confirmation study looking into rotation and tilt effects on x-ray diffraction microfibril angle estimation||09/19/16|
|2016||Lateral testing of glued laminated timber tudor arch||03/01/17|
|2016||Maximum likelihood estimation of the parameters of a bivariate Gaussian-Weibull distribution from machine stress-rated data||08/24/16|
|2016||Potential of ultrasonic pulse velocity for evaluating the dimensional stability of oak and chestnut wood||05/24/16|
|2016||Predict the relationship between wood baseball bat profile and durability||03/21/17|
|2016||Stress wave velocity patterns in the longitudinal-radial plane of trees for defect diagnosis||05/24/16|
|2016||Tensile strength of thermally modified laminated strand lumber and laminated veneer lumber||04/29/16|
|2016||Testing of small clear tension perpendicular to grain samples of Sugar Maple for radial, tangencial and 45 degree loading orientations||03/22/17|
|2016||Time-of-Flight Adjustment Procedure for Acoustic Measurements in Structural Timber||05/03/16|
|2016||Wind pressure testing of tornado safe room components made from wood||02/15/17|
|2016||Wood I beams manufactured from small diameter logs||03/22/17|
|2016||Wood: composition, structure, and nomenclature||08/28/18|
|2015||A Field Assessment of Timber Highway Bridge Durability in the United States||05/27/15|
|2015||Acoustic Evaluation of Thinning and Biosolid Fertilization Effects on Wood Quality of a Douglas-fir stand||09/25/15|
|2015||Asymptotically Efficient Estimation of a Bivariate Gaussian-Weibull Distribution and an Introduction to the Associated Pseudo-truncated Weibull||11/12/15|
|2015||Chapter 7: Nondestructive Testing in the Urban Forest||09/25/15|
|2015||Chapter 8: Acoustic Assessment of Wood Quality in Trees and Logs||09/25/15|
|2015||Comparison of Nondestructive Testing Methods for Evaluating No. 2 Southern Pine Lumber: Part A, Modulus of Elasticity||01/07/16|
|2015||Condition Assessment of a Historic Trout Rearing Station in Upper Michigan||06/05/15|
|2015||Detection of wood failure by image processing method: influence of algorithm, adhesive and wood species||05/13/16|
|2015||Dynamic determination of modulus of elasticity of full-size wood composite panels using a vibration method||01/07/16|
|2015||Full-Scale Experimental Verification of Soft-Story-Only Retrofits of Wood-Frame Buildings using Hybrid Testing||08/13/15|
|2015||Laser Scanning Technology as Part of a Comprehensive Condition Assessment for Covered Bridges||07/27/15|
|2015||Live-load performance evaluation of historic covered timber bridges in the United States||09/26/16|
|2015||Modeling temperature effect on dynamic modulus of elasticity of red pine (Pinus resinosa) in frozen and non-frozen states||03/10/15|
|2015||Non-destructive Analysis Reveals Effect of Installation Details on Plywood Siding Performance||09/25/15|
|2015||Nondestructive Evaluation of Wood: Second Edition||07/20/15|
|2015||Predicting Plywood Properties with Wood-based Composite Models||05/24/16|
|2015||Problems with a Type of Matched Subjects Design and Analysis||09/08/16|
|2015||Proceedings: 19th International Nondestructive Testing and Evaluation of Wood Symposium||10/16/15|
|2015||Residential Tornado Safe Rooms from Commodity Wood Products: Wall Development and Impact Testing||10/28/15|
|Below are 8 research projects associated with this research unit.|
|Project Number||Title||Project Dates|
|FPL-4714-1B||Develop baseline information on the fundamental anatomical, physical, mechanical, and processing characteristics of wood||10-01-2012 - 09-30-2017|
|FPL-4714-1A||Develop baseline information on the fundamental anatomical, physical/mechanical, and processing characteristics of wood||07-23-2007 - 07-23-2012|
|FPL-4714-3B||Develop information on structural wood systems, specifically systems and energy performance and design||10-01-2012 - 09-30-2017|
|FPL-4714-3A||Develop information on structural wood systems, specifically systems performance and design||07-23-2007 - 07-23-2012|
|FPL-4714-2B||Develop information on the engineering properties and performance of wood based structural products||10-01-2012 - 09-30-2017|
|FPL-4714-2A||Develop information on the engineering properties and performance of wood-based structural products||07-23-2007 - 07-23-2012|
|FPL-4714-MA||Public service||07-23-2007 - 07-23-2012|
|FPL-4714-MB||Public service||10-01-2012 - 09-30-2017|
|Sound waves reveal wood quality in logs and standing trees|
Researchers at the Forest Products Laboratory have extensively studied techniques using sound waves for assessing the mechanical and physical properties of wood and wood-based materials. Called non-destructive evaluation, or NDE, the techniques involve measuring the speed at which sound waves travel through logs or standing trees to determine the quality of the wood before it is sawn.
FPL researchers, working cooperatively with Fibre-gen, a New Zealand company, developed several tools on the market today that use acoustic, laser, and ultrasound technologies to evaluate the strength and soundness of the wood in logs and standing trees.
The Director HM200TM uses a pulse-echo measurement to assess logs and gives landowners and loggers a new way to grade and market logs by sorting and matching them to manufacturer and customer demands for stiffness and strength of products. The technology is beneficial when integrated into log supply and processing decision-making.
The Director ST300 utilizes several technologies (ultrasound, lasers, and impact-induced stress waves) to assess standing timber and allows forest managers to determine the quality of wood without cutting down the tree. The technology can be easily integrated with pre-harvest and earlier stand assessments, which aids in assessing mature stands for marketing, harvest planning and scheduling, assisting in planning silvicultural operations in immature stands, and in tree breeding operations.
Below are the 10 most recent Lab Notes blog postings pertaining to this research unit.
|Hot New Video!|
Trust us, you're going to want to see this...
|Step by Step:|
More than 1,500 wood samples are currently being evaluated at the Forest Products Laboratory (FPL) as part of an experiment that is helping researchers gain insight into the structural capabilities of various domestic hardwoods...
|New Videos of Blast Tests Available|
New video footage has been released of blast testing performed on cross laminated timber (CLT) structures, and it's quite a sight to see...
|Blast Testing, Take Two!|
The following is an update to a previous LabNotes post. The updated version was recently featured on the USDA and Forest Service blogs:
|"The Revolutionary Role of Wood in our Future":|
The following is a post on the USDA blog highlighting research from the Forest Products Laboratory and the Northern Research Station. The original post can be seen here...
|Turning Up the Heat:|
Wood buildings provide an array of economic and environmental benefits. Interest in capitalizing on those benefits by constructing mid- to high-rise buildings using cross-laminated timber (CLT) is growing. CLT is made from layers of dried lumber boar...
|A Major League Epidemic:|
Researchers at the Forest Products Laboratory (FPL) have been studying bat breakage for nearly a decade. Research materials engineer John Considine recently stopped by Madison’s WORT FM’s 8 O’Clock Buzz to discuss the project’s progress and h...
|The Future of Wood Products:|
Pallet Enterprise, the leading pallet and sawmill magazine in America, recently talked with World Neih, national program leader for Forest Products and Wood Utilization for the U.S. Forest Service in Washington, D.C...
|Technology Helps Turn Salvaged Trees into Moneymakers|
When insect scourges run rampant through forested ecosystems they can leave behind entire stands of dead and dying trees – especially if that scourge is the spruce budworm. In the Upper Midwest, where the spruce budworm infests forests on a cyclic ...
|CLT and ‘America’s Forests’:|
A new public television series focused on maintaining and sustaining healthy forests in America kicked off by exploring cross-laminated timber (CLT) and the future of green building...