SAE Update - April 2024 - 14
TECH FOCUS:
MATEriAlS
New methodology critical for
lightweighting body panels
At the end of 2023, SAE International's
Acoustical Materials Committee (AMC)
released a new recommended practice,
SAE J3130, Laboratory Measurement of
Vibration Damping Properties Using
Mechanical Impedance Method at the
Center of a Bar. This recommended
practice provides a test procedure to
measure the composite loss factor and
bending stiffness properties of a system
that consists of a damping material bonded
to a vibrating bar, which is excited at the
center.
SAE J3130, also referred to as the
CenterPoint method, is a gamechanger
for noise and vibration professionals. As
described by noise and vibration expert
and AMC member Pranab Saha, Ph.D., P.E.,
the new methodology is " very critical for
lightweighting body panels. "
As manufacturers strive to create
vehicles which are more lightweight, and
therefore more energy efficient-according
to the DOE, a 10% reduction in vehicle
weight can result in a 6 to 8% fuel economy
improvement-car body panels are shifting
away from steel towards aluminum,
composite, and other lightweight materials.
Until recently, damping was primarily
measured using
the Oberst
14
April 2024
UPDATE
Spartan
https://www.sae.org/standards/content/j3130_202312/
https://www.energy.gov/eere/vehicles/lightweight-materials-cars-and-trucks
https://www.energy.gov/eere/vehicles/lightweight-materials-cars-and-trucks
SAE Update - April 2024
Table of Contents for the Digital Edition of SAE Update - April 2024
SAE Update - April 2024 - Cov1
SAE Update - April 2024 - Cov2
SAE Update - April 2024 - 1
SAE Update - April 2024 - 2
SAE Update - April 2024 - 3
SAE Update - April 2024 - 4
SAE Update - April 2024 - 5
SAE Update - April 2024 - 6
SAE Update - April 2024 - 7
SAE Update - April 2024 - 8
SAE Update - April 2024 - 9
SAE Update - April 2024 - 10
SAE Update - April 2024 - 11
SAE Update - April 2024 - 12
SAE Update - April 2024 - 13
SAE Update - April 2024 - 14
SAE Update - April 2024 - 15
SAE Update - April 2024 - 16
SAE Update - April 2024 - 17
SAE Update - April 2024 - 18
SAE Update - April 2024 - 19
SAE Update - April 2024 - 20
SAE Update - April 2024 - 21
SAE Update - April 2024 - 22
SAE Update - April 2024 - 23
SAE Update - April 2024 - 24
SAE Update - April 2024 - 25
SAE Update - April 2024 - 26
SAE Update - April 2024 - 27
SAE Update - April 2024 - 28
SAE Update - April 2024 - 29
SAE Update - April 2024 - 30
SAE Update - April 2024 - 31
SAE Update - April 2024 - 32
SAE Update - April 2024 - 33
SAE Update - April 2024 - 34
SAE Update - April 2024 - 35
SAE Update - April 2024 - 36
SAE Update - April 2024 - 37
SAE Update - April 2024 - 38
SAE Update - April 2024 - 39
SAE Update - April 2024 - 40
SAE Update - April 2024 - 41
SAE Update - April 2024 - 42
SAE Update - April 2024 - 43
SAE Update - April 2024 - 44
SAE Update - April 2024 - 45
SAE Update - April 2024 - 46
SAE Update - April 2024 - 47
SAE Update - April 2024 - 48
SAE Update - April 2024 - 49
SAE Update - April 2024 - 50
SAE Update - April 2024 - 51
SAE Update - April 2024 - 52
SAE Update - April 2024 - 53
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