Engineering Commons^™

Barriers To Use Of Cross-Laminated Timber In Maine, Shane R. O'Neill

Forest Resources Faculty Scholarship

To increase understanding of both the adoption rate and in-state manufacturing of mass timber In Maine, the 131^st Legislature and Governor Mills passed LD 881, a resolve directing a study of the barriers facing cross-laminated timber In Maine and provide recommendations to promote their use in construction. This study was developed in response to the resolve. The study engaged 108 unique participants to define available training, education, and experiences across the stakeholders throughout the building lifecycle process in the state.

From this information, the following five recommendations are proposed:

1. Understand the policies and initiatives of other states to develop …

Integration Of Material Characterization, Thermoforming Simulation, And As-Formed Structural Analysis For Thermoplastic Composites, Philip M. Bean, Roberto A. Lopez-Anido, Senthil Vel

Civil Engineering Faculty Scholarship

An improved simulation-based thermoforming design process based on the integration of material characterization and as-formed structural analysis is proposed. The tendency of thermoplastic composites to wrinkle during forming has made simulation critical to optimized manufacturing, but the material models required are complex and time consuming to create. A suite of experimental methods has been developed for measurement of several required properties of the molten thermoplastic composite. These methods have the potential to enhance thermoplastic composites manufacturing by simplifying and expediting the process. These material properties have been verified by application to thermomechanical forming predictions using commercial simulation software. The forming …

Building Life-Cycle Carbon And Operational Energy Report, Duncan Cox, Alexandra Davis, Vamshe Gooje

General University of Maine Publications

The premise of this report is to surmise the embodied carbon impact and anticipated operational energy use of the 57,995 sf crosslaminated timber (CLT) and glulam addition to the Advanced Structures and Composites Center (ASCC) on the University of Maine campus. The project will contain open lab space for the world’s largest prototype polymer 3D printer, offices, and a presentation venue.

A life-cycle assessment is a methodology for quantifying environmental impacts at all stages of a building’s life cycle. This is a cradle-to-grave assessment of the building, beginning from raw material extraction and sourcing, to manufacturing, transportation, construction, energy use, …

Composite Materials And Structures Certificate, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

The Certificate requires completion of 12 credits (4 courses) through a combination of 400- and graduate-level courses as described in the course sequence section below. A maximum of one course (or 3 credits) at 400 or 500 level may be transferred from outside of UMaine to the program for credit.

Alfond W2 Ocean Engineering Lab, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

The Alfond W2 Ocean Engineering Lab at the University of Maine Advanced Structures and Composites Center is a unique facility equipped with a high-performance rotatable wind machine over a multidirectional wave basin. The facility will accurately simulate towing tests, variable water depths, and scaled wind and wave conditions that represent some of the worst storms possible anywhere on Earth.

Wind Blade Testing: Design, Fabricate, And Test Under One Roof, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

The University of Maine Advanced Structures and Composites Center's award winning research staff help clients take innovations from concept through design validation. The 8100 m2, $160 million laboratory employs more than 150 people with expertise in large-scale and coupon-level instrumentation and testing, composites manufacturing and analysis, finite element analysis and other modeling techniques. UMaine Composites Center faculty and staff may be engaged to jointly develop products, or may be contracted to fabricate and test composite or concrete products.

Wood Composites Manufacturing, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

The UMaine Advanced Structures and Composites Center has a complete Wood Composites Pilot Line allowing production of up to 4’ x 8’ oriented strand board (OSB), laminated strand lumber (LSL), particle board, MDF, and other cellulosic composites on a near-industrial scale.

Mass Timber At Umaine, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

Many architects and engineers believe that we are now in “the beginning of the timber age” where “plyscrapers” will soon be dotting city skylines all over the world. These tall wood buildings are a result of “mass timber” – a category of construction characterized by the use of large wood-based panels for wall, floor, and roof construction. Products in the mass timber family include: Cross-Laminated Timber (CLT), Nail-Laminated Timber (NLT), Glued-Laminated Timber (Glulam), and Structural Composite Lumber (SCL) e.g., Laminated Veneer Lumber (LVL), Laminated Strand Lumber (LSL), and Parallel Strand Lumber (PSL), as well as hybrid products manufactured with a …

Duration Of Load And Creep Effects Of Wood Composites, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

The Duration of Load & Creep Effects Lab at the UMaine Advanced Structures and Composites Center has a complete creep testing facility capable of evaluating duration of load effects on wood composites such as panel products, structural composite lumber (SCL), and wood-plastic composites (WPC).

Structural Testing Of Wood And Wood-Based Products, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

Maine’s economy has always drawn upon its forests. Our wood composites research not only follows this tradition, it allows future generations to do so, as well. International timber competition has forced Maine to become smarter about the lumber goods it produces, which is why the UMaine Advanced Structures and Composites Center has been working with industry to produce value added wood products since its inception in 1996. Focus areas have included FRP-reinforced glulam, structural composite lumber, wood-plastic composites, wood and bio-based panels, nanocellulose, and mass timber construction.

Selected Research And Development Projects, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

Promotional flyer with summaries of a selection of research and development projects including VolturnUS 1:8, DeepCLiDAR, Composite Arch Bridge System, MAKO, Secure Hybrid Composite Shipping Container, Modular Ballistic Protection System, and NASA HAID.

Examples Of Material Property Testing, Advanced Structures & Composites Center, University Of Maine

General University of Maine Publications

No abstract provided.

Collaborative Research: An Integrated Microstructure-Based Approach To Property Prediction For Cement-Based Materials, Eric N. Landis

University of Maine Office of Research Administration: Grant Reports

The project is a collaborative effort between the research groups at the University of Maine and the University of California, Davis. It represents a convergence of 3D micro-structural imaging with discrete element computational modeling to address the need for quantitative links between salient micro-structural properties and bulk material performance. High-resolution 3D images of material microstructure will be produced using x-ray microtomography (XMT). These images will be used to examine the micromechanical response of cement composites to mechanical loading and drying shrinkage. 3D deformation fields and internal crack distributions will be measured at selected loading stages and correlated with the spatial …

Career: Innovative Experimental Mechanics For Heterogeneous Construction Materials, Eric N. Landis

University of Maine Office of Research Administration: Grant Reports

The primary theme of this career development plan is to promote, advance, and apply innovative experimental analysis techniques to heterogeneous construction materials. This theme applies to both the research and the educational components of the plan. Concrete and portland cement-based materials are the focus here, but many of the concepts and techniques developed will be applicable to wood, rock, composites, and other materials with a heterogeneous microstructure. The objective of the research is to quantify specific microstructural damage and failure mechanisms in cement-based materials through advanced experimentation and data analysis. In order for there to be significant advances in our …

Dickey-Lincoln School Lakes, Maine, Hydro-Power Decision, October 27, 1978, James B. Longley

Dickey-Lincoln School Lakes Project

The Dickey-Lincoln School Project would consist of two earthfill structures designed to produce peaking and modest intermediate load power from the St. John River The larger of the two dams, the Dickey Dam, would be located immediately above the confluence of the Allagash and St. John Rivers. The Lincoln School Dam would also be located on the Upper St. John River, eleven miles downstream from the Dickey Dam. The Dickey Dam would have a total length of 10,600 feet and a maximum height of 335 feet. The Lincoln School Dam is considerably smaller and would be 1,600 feet long and …

Dickey-Lincoln School Lakes Project At Dickey, Maine : Draft Environmental Impact Statement, New England Division, United States Army Engineer Division

Dickey-Lincoln School Lakes Project

This draft EIS address the impacts of the dams and appurtenant structures. The marketing and transmission of power from Federal projects are the statutory responsibility of the Department of the Interior. Accordingly, they are conducting transmission line studies in the preparation of a draft EIS. The draft EIS for transmission line and marketing is scheduled to be submitted to the Council on Environmental Quality in February 1978. Both drafts will be combined and submitted as a Final Environmental Impact Statement in August 1978.