Based on the considerations above, the ISO/TC proposes the following objectives and strategic directions for its future work:

　

　

The major groups represented as experts in this technical committee and its subcommittees include:

　

The geographical representation in TC 108 and its subcommittees is highly diverse and involves countries making up most of the industrial world. Currently, TC 108 is made up of 21 P-members and 24 O-member countries. The twenty-one voting P-member countries of TC 108 are: Australia, Austria, Canada, China, Czech Republic, Denmark, Egypt, France, Germany, Hungary, Italy, Japan, Republic of Korea, New Zealand, Norway, Russian Federation, Slovakia, Sweden, Switzerland, United Kingdom, and the United States of America. The twenty-four O-member countries include: Belgium, Bulgaria, Croatia, Cuba, Finland, India, Indonesia, Ireland, Democratic People's Republic of Korea, Mexico, Mongolia, Netherlands, Pakistan, Poland, Portugal, Romania, Saudi Arabia, Singapore, South Africa, Spain, Thailand, Tunisia. Ukraine, and Yugoslavia

To attain the objectives outlined above, ISO/TC 108 requires the efficient use of intellectual and financial assets as well as a strong coordination between the TC and its SCs. A recent step enacted to improve efficiency was a formal reorganization of the Working Group structure directly under the purview of TC 108. This reorganization placed all Working Groups having a scope that is broad and basic to the mission of TC 108 and those which cross SC boundaries directly under TC 108. These WGS often deal with the more basic nature of the subject matter, i.e. the scientific aspects, whereas the SCs have a more engineering bent. In this way the SCs can draw on the expertise of the TC and not duplicate efforts or risk developing conflicting standards.

　

The current strategy of TC 108 places a high priority on the development of a series of standards that outline acceptable practices for making a mechanical vibration or shock measurement. Without these standards in place, other TC 108 standards risk being are severely limited or compromised since such standards are the first links in the chain of international standardization of mechanical shock and vibration. This series is built around appropriate calibration techniques for vibration and shock, appropriate signal conditioning and signal processing methods, and appropriate data acquisition methods. A series of calibration standards are being developed under the auspices of TC 108/SC 3/WG 6 which document calibration procedures ranging from primary calibration to field calibration under prescribed environmental conditions.

　

In the near future, ISO/TC 108 is going to re-examine issues associated with the basic physics of the mechanical vibration and shock response of complex systems, i.e. the art and science of vibration and shock measurement. By emphasizing these areas, it is hoped that this committee can provide tools that can be consistently applied to provide: meaningful measurement methods, repeatable measurement results and consistent data bases which are the backbone for setting performance and condition monitoring levels for acceptance and assessment purposes.

　

In addition to measurement practices, this technical committee will undertake new initiatives in defining appropriate vocabulary and symbols used in the vibration and shock community. The proliferation of new technology in this area is proceeding at such a rapid rate that inconsistencies in technical language are starting to present a problem. Precise language usage is fundamental for both public law and contract compliance. It is a prerequisite for providing meaningful guidance to protect public safety, the environment and culture. As a result, it is the intention of ISO/TC 108 to provide an update to its vocabulary standard every ten years.

　

New working groups have recently been established in the areas of stationary and non-stationary signal processing of vibration and shock measurement time-histories. These groups will generate standards to classify vibration and shock signals as well as analyze and identify feature sets from measurements. Such standards should greatly assist the machine condition monitoring community since data bases formed under these standards will be more uniform for comparison purposes and precursor identification.

　

A new work item concerned with developing standards for vibration and shock data acquisition is currently under consideration. The scope of this work item would be to identify a set of key parameters that adequately describe the basic conditions of a measurement and subsequent analysis for the purposes of allowing the technical community to efficiently compare measurements and build meaningful databases.

　

Also, under current consideration is a working group to standardize structural dynamics analysis and measurement tools for assessing the dynamic behavior and state of complex structural systems. These tools are primarily based on the application of a known force and the subsequent measurement of the amplitude and phase response at critical points in the system. If established, this working group would be responsible for standardizing the terminology used in these new methods, calibration and analysis procedures required to build data bases of comparable measurements. Future project areas might include measurement methods for mechanical mobility, modal analysis, structural intensity, wave-number analysis (spatial array processing) and structural damping evaluation.

　

Two new working groups have been established that deals with the measurement of dynamic system behavior, dynamic modeling and condition assessment of stationary structures such as buildings, dams, bridges and towers. Specifically, these working groups will standardize the terminology (working with WG 1), measurement procedures and analysis methods necessary to assess the dynamic state and condition of stationary structures and to establish criteria and procedures for the timely assessment of such structural systems. Structural systems under dynamic loading and under environmental stress exhibit fatigue damage and aging (e.g. oxidation) over time which, if not properly assessed, can result in structural failure with potential danger to public safety as well as economic dislocations. These dynamic stresses can be produced by vibration and shock loading whose impact may be direct or indirect. Previous assessment methods relied heavily on inspection methods. However, in recent decades, advances in structural dynamics evaluation/diagnostics methods have provided insights into the assessment, dynamic modeling and current condition of stationary structures that are both sensitive and quantitative. This working group will exploit these structural dynamics evaluation methods to develop standards of structural system condition assessment that can be used to protect the public safety.

　

Two working groups have been established to standardize vibration and shock control devices with the aim of utilizing such devices more effectively to protect public safety and the environment. It is anticipated that TC 108 will expand into this area with the aim of assisting the manufacturing sector and the consuming public in effectively specifying key parameters which permit effective evaluation.

　

Standards for balancing and balancing machines have been developed during the last three decades under the guidance of SC 1. A complete restructuring of this area will take place that will include revising older standards and developing new standards on in-situ balancing.

　

In the area of machinery, SC 2 is considering International Standards in the areas of:

　

in the area of mechanical vibration and shock in vehicles SC 2 has adopted a strategy of developing standards in the following areas:

　

In the area of vibration and shock transducers and associated instrumentation. SC 3 has adopted a strategy of developing standards in the following areas:

　

To meet the objectives in the area human exposure and assessment to vibration and shock, SC 4 is considering developing International Standards in the areas of:

　

In the area of condition monitoring and diagnostics SC 5 has adopted a strategy of developing standards in the following areas: