Page 52 - Spring 2007

Standards News
STANDARDS NEWS: A NEW TITLE AND SCOPE
FOR THE INTERNATIONAL ORGANIZATION FOR STANDARDIZATION / TECHNICAL COMMITTEE 108 (ISO/TC 108)
Bruce E. Douglas
Resonance Technologies Edgewater Maryland 21037
“The new title and scope reflects the growing importance and multi-disciplinary nature of condition monitoring in the work of the committee.”
In December 2006 the Technical ing to the work program of the TC. The new
Management Board of the International
Organization for Standardization (ISO), headquartered in Geneva, Switzerland, approved a new title and scope for ISO/TC 108. The new title is “Mechanical vibration, shock and condition monitoring.” This title change formally recognizes and brings to the forefront the growing field of condition monitoring of machines and structures and its importance in the agenda of ISO/TC 108.
The new scope of ISO/TC 108 was
approved as: Standardization in the fields of
mechanical vibration and shock and the effects of vibration and shock on humans, machines, vehicles (air, sea, land and rail) and stationary structures, and of the condition monitor- ing of machines and structures, using multidisciplinary approaches.
Specific areas of current interest include the standardiza- tion of:
• terminology and nomenclature in the fields of mechanical vibration, mechanical shock, and condi- tion monitoring;
• measurement, analysis and evaluation of vibration and shock, e.g., signal processing methods, structural dynamics analysis methods, transducer and vibration generator calibration methods, etc.;
• active and passive control methods for vibration and shock, e.g., balancing of machines, isolation and damping;
• evaluation of the effects of vibration and shock on humans, machines, vehicles (air, sea, land and rail), stationary structures, and sensitive equipment;
• vibration and shock measuring instrumentation, e.g., transducers, vibration generators, signal conditioners, signal analysis instrumentation and signal acquisition systems;
• measurement methods, instrumentation, data acqui- sition, processing, presentation; analysis, diagnostics and prognostics, using all measurement variables required for the condition monitoring of machines;
• training and certification of personnel in relevant areas.
This change of mission statement represents a much need- ed update. The previous scope, written in 1991, at the time that Subcommittee 5 (SC 5) was formed, added condition monitor-
50 Acoustics Today, April 2007
title and scope reflects the growing impor- tance and multi-disciplinary nature of condi- tion monitoring in the work of the commit- tee. These changes were made to reflect bet- ter the current program of work in TC 108 and for consistency with the ISO approved Business Plan.
ISO/TC 108 has been actively writing vibration and shock standards for over forty years. First proposed to ISO on 29 May 1962 by the United States of America Standards Institute, the predecessor organ-
ization to today's American National Standards Institute (ANSI), TC 108 held its initial plenary meeting in 1964. By the mid-1970’s ANSI assigned the Acoustical Society of America the responsibility for the Secretariat for TC 108. (ASA was already administering the national parallel com- mittee, S2.) When SC 5 was formed in the early 1990’s, ASA again was tapped to provide the International Secretariat.
The need to make these current changes has its roots go back seven years ago when ISO/TC 108 was reorganized inter- nally into a set of working groups directly under the chair of TC 108. These working groups dealt with the basic science of the TC 108 mission and subcommittees that are primarily con- cerned with the engineering aspects. Currently, the TC 108 working groups have been formed to standardize:
basic vocabulary and nomenclature issues (WG 1) vibration and shock isolators (WG 23)
condition assessment of structural systems from dynam-
ic response measurements including structural dynamics measurements methods, measurement parameters and structural condition monitoring (WG 24)
stationary and non-stationary signal processing involv- ing vibration, shock and condition monitoring issues (WG 26)
viscoelastic material evaluation and structural damping (WG 28)
vibration power flow methods (WG 29)
rotor balancing (WG 31).
TC 108 subcommittees have been formed to standardize: vibration of machines, vehicles (air, land and sea) and sta-
tionary structures (SC 2)
vibration and shock transducers and calibration methods
(SC 3)
human response to vibration and shock (SC 4)