The Influence of Moisture Content on the Physical and Mechanical Properties of Wood

Course Number: S-2013
Credit: 2 PDH
Subject Matter Expert: John Galinski, P.E.
Price: $59.90 Purchase using Reward Tokens. Details
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Overview

In The Influence of Moisture Content on the Physical and Mechanical Properties of Wood, you'll learn ...

  • The relationship between equilibrium moisture content, relative humidity and temperature
  • The relationship between moisture content and shrinkage
  • What is required for a wood specimen to reach dimensional stability
  • The four primary thermal properties of wood and how they are impacted by moisture content

Overview

PDHengineer Course Preview

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Credit: 2 PDH

Length: 20 pages

Wood, like many natural materials, is hygroscopic; it takes on moisture from the surrounding environment. Moisture exchange between wood and air depends on the relative humidity and temperature of the air and the current amount of water in the wood. This moisture relationship has an important influence on wood properties and performance. Many of the challenges of using wood as an engineering material arise from changes in moisture content or an abundance of moisture within the wood.

This course discusses the macroscopic physical properties of wood with emphasis given to their relationship with moisture content. A basic understanding of the physical properties of wood is desirable since these properties affect a wide variety of structural shapes that are manufactured from wood.

Specific Knowledge or Skill Obtained

This course teaches the following specific knowledge and skills:

  • The moisture content of green wood
  • Fiber saturation and maximum moisture content
  • Mechanisms of water absorption
  • Transverse, volumetric and longitudinal shrinkage
  • Shrinkage values of a variety of domestic and imported woods
  • Commonly uses bases for volume and density of wood
  • Methods for calculating density
  • Factors that affect the thermal conductivity and heat capacity of wood
  • How water content impacts the coefficient of thermal expansion for wood
  • A/C and D/C electrical properties for wood, including resistivity, dielectric constant, and impedance
  • Coefficients of static and kinetic friction for wood

Certificate of Completion

You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 15 questions. PDH credits are not awarded until the course is completed and quiz is passed.

Board Acceptance
This course is applicable to professional engineers in:
Alabama (P.E.) Alaska (P.E.) Arkansas (P.E.)
Delaware (P.E.) Florida (P.E. Area of Practice) Georgia (P.E.)
Idaho (P.E.) Illinois (P.E.) Illinois (S.E.)
Indiana (P.E.) Iowa (P.E.) Kansas (P.E.)
Kentucky (P.E.) Louisiana (P.E.) Maine (P.E.)
Maryland (P.E. Category A) Michigan (P.E.) Minnesota (P.E.)
Mississippi (P.E.) Missouri (P.E.) Montana (P.E.)
Nebraska (P.E.) Nevada (P.E.) New Hampshire (P.E.)
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Texas (P.E.) Utah (P.E.) Vermont (P.E.)
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PDHengineer Course Preview

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Credit: 2 PDH

Length: 20 pages

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