Davies C.E., Spedding N.B., Mass Flow Determination From the Pressure Drop Across the Fluidized Solids in a Fluidized Bed Feeder. Powder Technology, 53(1987) 131-136

Spedding, N.B. The Effect of Sensor Geometry on the Use of Polyvinylidene Fluoride as an Acoustic Emission Sensor. Industrial Research Limited. Insight Journal (formerly The British Journal of Non Destructive Testing), Vol. 38, No. 1, January 1996


Provisional patent number 264738 (New Zealand) -
A Position Encoder ... an improved or alternative rotary or linear position encoder. October 20 1994.


1973 - 1979

Grigg V.L., Spedding N.B. Design of a 7A Constant Current Supply for use in the Second stage of the Electrolysis of Water to obtain Tritium. INS-M-21 Aug 1973

Spedding N.B. The Updated Unicam Flame Photometer INS-M-23 Mar 1974

Dowell T.M., Spedding N.B. C-14 Liquid Scintillation Counter Spectrometer INS-M-22 Feb 1974

Spedding N.B. Vacuum Delay Unit (Thick film) INS-M-27 June 1974

Spedding N.B. Packard Tri-Carb Liquid Scintillation Counter Automation INS-M-26

Spedding N.B. A Secondary Interface for the Aldermaston Micromass 30 Mass Spectrometer to allow IEEE Bus Control. INS-M-32

Polletti N.R., Spedding N.B., Bullied J.L. Field datalogging with no moving parts. proceedings NELCON 1978

Spedding N.B. A Printing Calculator Peripheral INS-M-33

Spedding N.B. Baring Head COSMAC datalogger. INS-M-37

Spedding N.B. EPROM Programmer. INS-M-39

Spedding N.B. Automated Flame Photometer. INS-M-40

Spedding N.B. Primitive disk operating system (DOS). INS-M-42

Spedding N.B. An inexpensive digital logic monitor. NELCON 1976

McCormick J.D., Spedding N.B. Microprocessors and microcomputers. Series in NZ Electron from Oct 1976

Spedding N.B. Vectored interrupts and the COSMAC CDP1802. April 1977, NZ Electron

Spedding N.B. A "Bare Bones" Number Cruncher. June 1977, NZ Electron

Spedding N.B., Plummer J.W. INS HAL System: Technical Manual INS-M-46, 1979



1980 - 1989

Spedding N.B.; Plummer, J.W. (DSIR, INS) The Design of a microcomputer and its application in control of science experiments. Singapore Institute of Engineering Technicians Yearbook 1980/81

Spedding N.B.; Plummer, J.W. (DSIR, INS) The Design of a microcomputer and its application in control of science experiments. Proceedings of the National Conference. pp 108 - 116. Massey University. Dept of Unversity Extension, Palmerston North, 1980 (INS Rept 29) [ best paper award ]

Spedding N.B.; Plummer, J.W. (DSIR, INS) The Design of a microcomputer and its application in control of science experiments. New Zealand Electron 6 (2) ; 10-13 (Nov 1980)

Spedding N.B. Microprocessor control of instrumentation. Scope 17 (1) : 2 - 6 Mar 1982 (INS Rept 76)

Spedding N.B. INS BASIC interpreter: Users manual. INS-P-156 Mar 1981 p58

Spedding N.B. INS HAL System NAA mass spectrometer. INS-M-52 Nov 1981 p16

Spedding N.B. INS HAL System counter/timer board. INS-M-53 Nov 1981 p10

Spedding N.B. TU-58 tape interface and HALTOS tape operating system. INS-M-63 July 1981

Spedding N.B. INS HAL System: Users Manual. INS-M-159 Mar 1981

Spedding N.B. Software utilities and comments on the INS HAL System. INS-M-160 Nov 1981

Spedding N.B. HAL System Spectrum Analyser: X-Y Display INS-M-****

Spedding N.B. HAL System MS10 Mass Spectrometer Automation INS-M-****

Spedding N.B. Temperature Profile Controller - Technical and Operating Manual RI 879

Spedding N.B., Brown R.; The AUTOLOG Alternative Fuels Datalogger. Proceedings 22nd National Electronics Conference, Oct 1985 [ best paper award ]

Spedding N.B., Brown R.; The AUTOLOG Alternative Fuels Datalogger. Automation and Control, Nov 1985

Spedding N.B., AUTOLOG, A datalogger for Automotive Research: Users Manual. IPD/RI/1044

Spedding N.B., AUTOLOG Support Programs for the Epsom HX-20: IPD/RI/1333A

Spedding N.B., AUTOLOG Datalogger Technical Report: IPD/RI/1333B

Spedding N.B., Chromatograph Temperature Programmer: (for Childrens Dental Clinic) IPD/RI/****

Spedding N.B., LABLOG Temperature/Humidity Monitoring System for Laboratory Applications. IPD/RI/1378

Spedding N.B., Programmable Digital Panel Meter: Users Manual and Technical Description IPD/RI/****

Spedding N,B., Level Sensor for the Control of High Temperature Magnetite using a Radioactive Source, IPD/RI/2087 Aug 1987

Spedding N.B., A 32 Channel Differential Multiplexer Controller and Electronic Scale Interface with IEEE-488 Bus capability for use with an HP-85microcomputer on the Coal Tar Hydrocracker/Methanol-to-Gasoline Plant IPD/RI/1006

Spedding N.B., Programmable Counting System: User and Technical Information. (Measurement of geothermal steam velocities) IPD/RI/1501 May 1986

Davies C.E., Spedding N.B., Mass Flow Determination From the Pressure Drop Across the Fluidized Solids in a Fluidized Bed Feeder. Powder Technology, 53(1987) 131-136

Spedding N.B., Multichannel Temperature Measurement Electronic Engineering November 1987

Spedding N.B., Monostable Applied to Low Power Systems. Electronic Engineering December 1987

Minchington I., Spedding N.B. Analysis of Bulk Resistivity of Fertilizer Samples RI 2523 Sept 1988


1990 -

Jewiss C., Spedding N.B. Video Capture for IBM PCs RI 2302 June 1990

Jewiss C., Spedding N.B. Video uMeter (PC controlled vertical lines mixed with a video signal RI 0000 June 1990

Spedding N.B., Surface Resistance Measurement of Plastic Samples RI 3067 Mar 1990

Spedding N.B., FC42DELT: Converting FC4 data files to Delta Junior Format RI 3076 Mar 1990

Spedding N.B., 2MYSTAT: Converting ASCII files to MYSTAT system files. RI 3150 July 1990

Spedding N.B., TEXCEL Dynamometer User Interface Program Recommendations RI 3176 July 1990

Spedding N.B., Application of a Hand Held Image Scanner in Image Processing RI 3247 Aug 1990

Spedding N.B., Non-Destructive Testing of Fibre Reinforced Composites RI 3622 July 1991

Spedding N.B., XPLOT: Area Fill and Ground-plane Generator for EAGLE PCB laserjet files RI .... Nov 1991

Spedding N.B., ACADXYZ: Matrix to Autocad 3D Surface Converter RI .... June 1992

Spedding N.B., Briggs N. Upgraded Digitec 3000 Datalogger RI .... July 1992

Spedding N.B., Metalnet - A report on the implementation of a small PC network RI .... July 1992

Spedding N.B., Evaluation of Eddy Current Detection of Cracking in Bandsaw Blades RI .... June 1992

Spedding N.B., An Acoustic Emission Evaluation System for CNG Cylinder Testing RI .... July 1992

Spedding N.B., Report on the Design of an Acoustic Emission System for Fibre Reinforced Composite Testing. RI .... July 1992

Spedding N.B., I2C Bus Extender (design note) - submitted for publication

Spedding N.B., Jewiss C.A., Digital Micrometer (design note) - submitted

Spedding N.B., Jewiss C.A., Video Capture System - in preparation

Spedding N.B., Versatile Digital Input Configuration - in preparation

Spedding N.B., Non Destructive Testing of Fibre Reinforced Composites. DSIR Industrial Development RI 3959 1992.

Spedding N.B., Comparison of PZT and PVDF Acoustic Emission Sensors for use with Fibre Reinforced Composites. IRL Report Number RI 18019.02, July 1993.

Spedding N.B., Selection of a Commercial Acoustic Emission System., IRL Report Number 18019.01, July 1993.

Spedding N.B., Software for the Recommissioning of the Methanol to Gasoline Pilot Plant Reactor.(Labview), IRL Report Number 19124.01, June 1993.

Spedding N.B., An Assessment of Acoustic Emission Testing of Carbon Fibre Reinforced Composite Windsurfer Masts. IRL report RI 18913.01, 9/11/93.

Spedding N.B., Acoustic Emission, the Voice of Fibreglass. Composite, Journal of the New Zealand Composites

Spedding N.B., Acoustic Emission, Or Why You Walk Softly Over Old Bridges, Non Destructive Testing Association Journal, 1993.

Spedding N.B. A Comparison of the Labview, Labwindows and Visual BASIC tools used for data acquisition program development. (in preparation).

Spedding, N.B. Report on a Visit to the Rotorua Area to promote Acoustic Emission. Industrial Research Limited Report, August 1993 (CONFIDENTIAL).

Spedding, N.B. APCALC: A Program to Calculate the Effect of Acoustic Sensor Aperture Shape and Size on Response in the Frequency Domain. Industrial Research Limited Report No. 18913.02, June 1994.

Spedding, N.B. DUALJTFA: A Program to Capture, Analyse and Save PM97 Digital Oscilloscope Waveforms. Industrial Research Limited Report No. 18913.03, June 1994.

Spedding, N.B. Considerations in the use of Polyvinylidene Fluoride as an Acoustic Emission Sensor on Fibre Reinforced Composites. Industrial Research Limited Report No. 18913.04

Spedding, N.B. Ester extraction data acquisition program. Industrial Research Limited Report No. (?) (in preparation)

Spedding, N.B. Computers and the Information Age. NDTA News, June 1994.

Spedding, N.B. MultiLog: A Windows based data acquisition program for creep testing and general use. Industrial Research Limited Report No. (?) (in preparation)

Spedding, N.B. NDT and the Internet, NZ NDTA News, February 1996

SOFTWARE/CD-ROM Publications

Quality Induction Module - Multimedia Intranet application for BECA CARTER HOLLINGS and FERNER, includes audio, video and animation.

XFILL version1.0 - a program to add ground plane artwork to printed circuit boards. Published in the SIMTEL MSDOS archive/CDROM and also "Made in Holland" produced by the Dutch Info Centre, Postbus 568, 1200 AN, Hilversum.

XFILL and other programs are also to be published in an upcoming CD-ROM Brainstormer produced by Pacific HiTech

INSBASIC - A Control Oriented BASIC Interpreter based on the Lawrence Livermore Laboratories BASIC Interpreter. This version was debugged and enhanced to allow operation in a multitasking realtime environment, with many mathematical, control and data functions added. This program was used by many of those who built the kitset HAL computer also developed at this time.

MULTILOG - A Windows(TM) based multitask data acquisition program, this program has been on-sold to clients with related hardware. A demo version will be available.


Windsurf New Zealand

A complete guide to windsurfing in New Zealand. Winner of the inaugural TUANZ/INZ for the best existing web page design in New Zealand competition, also PC Magazine top 100 web site list for 1996.

Surf New Zealand

New site, the result of requests via the windsurf pages above.

Non Destructive Testing Association Home Page

An unusual/unique web page design, includes tutorial material, animation.

Other sites may be accessed via


Methanol/Gasoline Ratio Cell. On-line fuel management of mixed fuels; development of a cell capable of measuring the ratio of mixed fuels to aid engine control.

Data Acquisition Interface. Multipurpose data acquisition microcomputer; a multifunction uP based board to allow a portable PC to be used as a datalogger.

Programmable fuel injection pump controller and datalogger. Research test bed unit for fuel injection alternative; a versatile controller/ logger for the development of a novel fuel injection pump.

DYNOPAK direct connect dynamometer system. Hydraulic "rolling road" substitute; development of control systems for a novel automotive dynamometer system based on replacing the drive wheels with hydraulic pumps working against a computer controlled load (valve), has also been used with army tanks.

Digital oscilloscope to PC interface. Extending the data capture ability and intelligence of digital oscilloscopes to aid research into the operation of diesel engines on methanol.

Powder technology/measurement. Using various techniques to measure speed, massflow, moisture etc. in powders (casein).

Non Destructive Testing. Investigating the non destructive testing of fibre reinforced composites (ie fibreglass etc.) using acoustic emission techniques, including the use of polyvinylidene fluoride (PVDF) transducers on plate FRP structures. Also using acoustic emission on CNG cylinder testing and ceramics characterisation. Eddy current testing to detect cracked saw blades.

Development of data acquisition software for diverse applications.